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https://api.github.com/repos/pandas-dev/pandas/issues/15708
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214,878,199
MDExOlB1bGxSZXF1ZXN0MTExMTkzOTIy
15,708
TST: remove rest of yield warnings
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2017-03-17T00:41:09Z
2017-03-17T15:03:20Z
2017-03-17T14:08:49Z
CONTRIBUTOR
null
xref https://github.com/pandas-dev/pandas/issues/15341
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214,879,453
MDExOlB1bGxSZXF1ZXN0MTExMTk0ODAy
15,709
TST: Reorganize package_check and skip_if_no_package
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2
2017-03-17T00:51:16Z
2017-03-17T13:11:46Z
2017-03-17T12:50:27Z
MEMBER
null
`skip_if_no_package` literally just calls `package_check` with no additional decorations and with confusing `*args` and `**kwargs`. However, `skip_if_no_package` is a better name than `package_check`.
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214,879,592
MDExOlB1bGxSZXF1ZXN0MTExMTk0ODk2
15,710
MAINT: Drop take_last kwarg from method signatures
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7
2017-03-17T00:52:22Z
2017-03-18T01:27:14Z
2017-03-18T00:13:21Z
MEMBER
null
Affected methods: 1) `nlargest` 2) `nsmallest` 3) `duplicated` 4) `drop_duplicates` xref #10236, #10792, #10920.
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214,902,806
MDExOlB1bGxSZXF1ZXN0MTExMjEwNTUw
15,711
BUG: TZ-aware Series.where() appropriately handles default other=nan (#15701)
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1
2017-03-17T04:07:18Z
2017-03-17T13:23:43Z
2017-03-17T13:11:05Z
CONTRIBUTOR
null
- [x] closes #15701 - [x] tests added / passed - [x] passes ``git diff upstream/master | flake8 --diff`` - [x] whatsnew entry
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DOC: Add gotcha about flake8-ing diff
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1
2017-03-17T05:29:23Z
2017-03-17T13:11:44Z
2017-03-17T12:51:41Z
MEMBER
null
The `flake8`-ing the diff will not catch any import style errors. I put an alternative check that is more comprehensive but will take longer to run since you will be checking entire files instead of the diff.
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214,955,698
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15,713
BUG: Series.asof fails when series is all nans
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3
2017-03-17T09:53:56Z
2017-03-29T09:27:17Z
2017-03-29T00:46:47Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible ```python >>> import pandas as pd >>> import numpy as np >>> pd.Series([np.nan]).asof([0]) Traceback (most recent call last): File "<ipython-input-268-2b0f8084a393>", line 1, in <module> pd.Series([np.nan]).asof([0]) File "~/anaconda3/lib/python3.5/site-packages/pandas/core/generic.py", line 3985, in asof locs = self.index.asof_locs(where, ~(nulls.values)) File "~/anaconda3/lib/python3.5/site-packages/pandas/indexes/base.py", line 1837, in asof_locs result = np.arange(len(self))[mask].take(locs) IndexError: cannot do a non-empty take from an empty axes. ``` #### Problem description When calling `Series.asof()`, if the series happens to contain all nans, an error is raised. See #10343. #### Expected Output ```python 0 NaN dtype: float64 ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 3.5.2.final.0 python-bits: 64 OS: Linux OS-release: 4.9.8-100.fc24.x86_64 machine: x86_64 processor: x86_64 byteorder: little LC_ALL: C LANG: C LOCALE: None.None pandas: 0.19.0+579.g4ce9c0c pytest: 3.0.5 pip: 9.0.1 setuptools: 27.2.0 Cython: 0.25.2 numpy: 1.11.3 scipy: 0.18.1 xarray: 0.9.1 IPython: 4.2.0 sphinx: 1.5.1 patsy: 0.4.1 dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: 1.2.0 tables: 3.3.0 numexpr: 2.6.2 feather: None matplotlib: 2.0.0 openpyxl: 2.4.1 xlrd: 1.0.0 xlwt: 1.2.0 xlsxwriter: 0.9.6 lxml: 3.7.2 bs4: 4.5.3 html5lib: 0.999 sqlalchemy: 1.1.5 pymysql: None psycopg2: None jinja2: 2.9.4 s3fs: None pandas_gbq: None pandas_datareader: None </details>
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214,961,131
MDU6SXNzdWUyMTQ5NjExMzE=
15,714
Mode should be defined if the Series consist of only one object
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2
2017-03-17T10:17:02Z
2017-04-12T10:29:20Z
2017-04-12T10:29:20Z
CONTRIBUTOR
null
#### Code Sample ```python >>> import pandas.core.algorithms as algos >>> algos.mode([5]) Series([], dtype: int64) ``` #### Problem description Currently the `mode` of a series is not defined if the series consist of only one object. This limits the use of the mode as an aggregation method. Compare this with the behaviour of other libraries, e.g. `scipy`: ```python >>> from scipy import stats >>> scipy.stats.mode([5]) (array([ 5.]), array([ 1.])) ``` #### Expected Output ```python 0 5 dtype: int64 ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 2.7.10.final.0 python-bits: 64 OS: Darwin OS-release: 14.5.0 machine: x86_64 processor: i386 byteorder: little LC_ALL: None LANG: None LOCALE: None.None pandas: 0.19.2 nose: 1.3.7 pip: 9.0.1 setuptools: 34.3.1 Cython: None numpy: 1.8.0rc1 scipy: 0.13.0b1 statsmodels: None xarray: None IPython: 5.1.0 sphinx: 1.4.8 patsy: None dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: None tables: None numexpr: None matplotlib: 1.3.1 openpyxl: 2.3.0-b1 xlrd: 1.0.0 xlwt: None xlsxwriter: 0.9.3 lxml: 3.7.3 bs4: None html5lib: None httplib2: None apiclient: None sqlalchemy: 1.1.6 pymysql: None psycopg2: 2.6.2 (dt dec pq3 ext lo64) jinja2: 2.9.5 boto: 2.42.0 pandas_datareader: None </details>
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214,968,846
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15,715
json encoding for python 2
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4
2017-03-17T10:50:27Z
2018-04-04T13:41:48Z
2018-04-04T13:41:47Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python # not working pd.read_json(path, encoding='cp1251') # that works import json with open(path, 'r') as f: js = json.load(f, encoding='cp1251') pd.DataFrame(js) ``` #### Problem description It is not mentioned explicitly in docstring that `encoding` option used in py3 only. Currently `pd.read_json` mostly ignores `encoding=` option in python2. Function `pd.common._get_handle` warns about using encoding with compression, but silently continues without actually using `encoding` otherwise. It looks like subtasks are split in unfavourable way to pass encoding up to `json.loads` call. #### Expected Output One might expect pandas use encoding, to get life easier (as pandas usually do ;) ). Or at least properly warn that option is ignored. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 2.7.12.final.0 python-bits: 64 OS: Windows OS-release: 7 machine: AMD64 processor: Intel64 Family 6 Model 58 Stepping 9, GenuineIntel byteorder: little LC_ALL: None LANG: None LOCALE: None.None pandas: 0.19.2 nose: 1.3.7 pip: 9.0.1 setuptools: 28.8.0.post20161110 Cython: 0.24.1 numpy: 1.12.0 scipy: 0.18.1 statsmodels: 0.6.1 xarray: None IPython: 5.1.0 sphinx: 1.4.6 patsy: 0.4.1 dateutil: 2.5.3 pytz: 2016.6.1 blosc: None bottleneck: 1.0.0 tables: 3.2.2 numexpr: 2.6.2 matplotlib: 2.0.0 openpyxl: 2.3.2 xlrd: 1.0.0 xlwt: 1.1.2 xlsxwriter: 0.9.2 lxml: 3.6.4 bs4: 4.3.2 html5lib: None httplib2: None apiclient: None sqlalchemy: 1.0.13 pymysql: 0.7.6.None psycopg2: None jinja2: 2.8 boto: 2.40.0 pandas_datareader: None </details>
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214,974,927
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15,716
to_json float precision bug
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4
2017-03-17T11:18:26Z
2020-06-30T13:16:17Z
2017-04-03T12:43:26Z
NONE
null
xref #15864 for more tests #### Code Sample, a copy-pastable example if possible ```python >>> pd.DataFrame([dict(a_float=0.99999999999999944)]).to_json(double_precision=14) '{"a_float":{"0":1.0}}' >>> pd.DataFrame([dict(a_float=0.99999999999999944)]).to_json(double_precision=15) '{"a_float":{"0":0.1}}' ``` #### Problem description ... #### Expected Output ```python '{"a_float":{"0":1.0}}' ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 2.7.12.final.0 python-bits: 64 OS: Linux OS-release: 4.4.0-66-generic machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en_GB.UTF-8 LOCALE: None.None pandas: 0.19.2 nose: 1.3.7 pip: 9.0.1 setuptools: 34.3.2 Cython: 0.24.1 numpy: 1.12.0 scipy: 0.18.1 statsmodelsdouble_precision: 0.6.1 xarray: None IPython: 5.1.0 sphinx: 1.4.6 patsy: 0.4.1 dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: 1.1.0 tables: 3.2.3.1 numexpr: 2.6.1 matplotlib: 1.5.3 openpyxl: 2.3.2 xlrd: 1.0.0 xlwt: 1.1.2 xlsxwriter: 0.9.3 lxml: 3.6.4 bs4: 4.5.1 html5lib: None httplib2: 0.10.3 apiclient: 1.5.3 sqlalchemy: 1.1.2 pymysql: None psycopg2: None jinja2: 2.7.3 boto: 2.42.0 pandas_datareader: None </details>
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215,020,783
MDU6SXNzdWUyMTUwMjA3ODM=
15,717
`date_range` with CustomBusinessDay receives TypeError
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6
2017-03-17T14:33:00Z
2017-03-17T17:20:12Z
2017-03-17T14:38:47Z
NONE
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#### Code Sample, a copy-pastable example if possible ```python import datetime from pandas.tseries.offsets import CustomBusinessDay from pandas.tseries.holiday import AbstractHolidayCalendar, Holiday, \ USMartinLutherKingJr, USPresidentsDay, USMemorialDay, USLaborDay, \ USThanksgivingDay, GoodFriday, nearest_workday import pandas as pd from pandas.tseries.offsets import BDay class TradingCalendar(AbstractHolidayCalendar): """Calendar of trading holidays in the US""" rules = [ Holiday('New Years Day', month=1, day=1, observance=nearest_workday), USMartinLutherKingJr, USPresidentsDay, USMemorialDay, Holiday('July 4th', month=7, day=4, observance=nearest_workday), USLaborDay, USThanksgivingDay, GoodFriday, Holiday('Christmas', month=12, day=25, observance=nearest_workday) ] class TradingDay(CustomBusinessDay): def __init__(self, n=1): super(TradingDay, self).__init__(n, calendar=TradingCalendar()) r = pd.date_range(datetime.datetime(2017, 12, 26), datetime.datetime(2017, 1, 6), TradingDay(1)) len(r) == 9 ``` #### Problem description If you use a standard `BDay()` in the `date_range()` call, everything works as expected. However, if you use a `CustomBusinessDay`, it ends with a TypeError: ``` Traceback (most recent call last): File "/Users/bspeice/Development/datemath.py", line 102, in trading_range return pd.date_range(start, end, freq=TradingDay(skip)) File "/Users/bspeice/venvs/scientific/lib/python2.7/site-packages/pandas/tseries/index.py", line 2023, in date_range closed=closed, **kwargs) File "/Users/bspeice/venvs/scientific/lib/python2.7/site-packages/pandas/util/decorators.py", line 91, in wrapper return func(*args, **kwargs) File "/Users/bspeice/venvs/scientific/lib/python2.7/site-packages/pandas/tseries/index.py", line 301, in __new__ ambiguous=ambiguous) File "/Users/bspeice/venvs/scientific/lib/python2.7/site-packages/pandas/tseries/index.py", line 506, in _generate index = _generate_regular_range(start, end, periods, offset) File "/Users/bspeice/venvs/scientific/lib/python2.7/site-packages/pandas/tseries/index.py", line 1976, in _generate_regular_range dates = list(xdr) File "/Users/bspeice/venvs/scientific/lib/python2.7/site-packages/pandas/tseries/offsets.py", line 2881, in generate_range start = offset.rollforward(start) File "/Users/bspeice/venvs/scientific/lib/python2.7/site-packages/pandas/tseries/offsets.py", line 432, in rollforward dt = dt + self.__class__(1, normalize=self.normalize, **self.kwds) TypeError: __init__() got an unexpected keyword argument 'normalize' ``` This error happens with every release from 0.18.0 - 0.19.2, I haven't tested outside this range. #### Expected Output True #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 2.7.13.final.0 python-bits: 64 OS: Darwin OS-release: 16.4.0 machine: x86_64 processor: i386 byteorder: little LC_ALL: None LANG: None LOCALE: None.None pandas: 0.19.2 nose: 1.3.7 pip: 9.0.1 setuptools: 34.3.0 Cython: None numpy: 1.12.0 scipy: 0.18.1 statsmodels: None xarray: None IPython: 5.2.2 sphinx: 1.5.2 patsy: 0.4.1 dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: None tables: None numexpr: None matplotlib: 2.0.0 openpyxl: None xlrd: 1.0.0 xlwt: None xlsxwriter: None lxml: None bs4: 4.5.3 html5lib: 0.9999999 httplib2: 0.10.3 apiclient: None sqlalchemy: None pymysql: None psycopg2: None jinja2: 2.9.5 boto: None pandas_datareader: None </details>
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15,718
TST: only catch deprecation warnings for top-level module imports
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5
2017-03-17T14:58:28Z
2017-03-21T00:18:42Z
2017-03-17T14:58:35Z
CONTRIBUTOR
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15,719
Segmentation fault when ast and tables are imported before pandas
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2017-03-20T17:36:29Z
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```python import tables import ast import pandas ``` This results in a segmentation fault using Anaconda 64 bit under Python 2 and Python 3. * Pandas version 0.19.2 as obtained from conda-forge (np112py27_1). * Pytables version 3.3.0 as obtained from conda0forge (np112py27_0).
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DOC: Update broken link in cookbook.rst #15605
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1
2017-03-17T15:39:33Z
2018-12-12T21:40:25Z
2017-03-17T15:42:26Z
CONTRIBUTOR
null
- [ ] closes #15605 - [ ] tests added / passed - [ ] passes ``git diff upstream/master | flake8 --diff`` - [ ] whatsnew entry
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215,065,960
MDU6SXNzdWUyMTUwNjU5NjA=
15,721
groupby ignores rows containing the number -9223372036854775808
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2
2017-03-17T17:07:42Z
2017-03-17T17:21:08Z
2017-03-17T17:20:49Z
NONE
null
#### Code Sample, a copy-pastable example if possible ``` In [1]: import pandas as pd In [2]: import numpy as np In [3]: np.iinfo(np.int64).min == -9223372036854775808 True In [4]: data = [] In [5]: data.append(-9223372036854775808) In [6]: data.append(-9223372036854775808+1) In [7]: data.append(0) In [8]: df = pd.DataFrame( data, columns=["x"] ); df Out[8]: x 0 -9223372036854775808 1 -9223372036854775807 2 0 In [9]: df.groupby("x").groups Out[9]: {-9223372036854775807: Int64Index([1], dtype='int64'), 0: Int64Index([2], dtype='int64')} In [10]: df.groupby("x")["x"].count() x -9223372036854775807 1 0 1 Name: x, dtype: int64 ``` #### Problem description The groupby operation ignores the row containing -9223372036854775808. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 3.5.2.final.0 python-bits: 64 OS: Linux OS-release: 4.8.0-41-generic machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en_GB.UTF-8 LOCALE: en_GB.UTF-8 pandas: 0.19.2 nose: None pip: 9.0.1 setuptools: 34.3.1 Cython: None numpy: 1.11.1rc1 scipy: None statsmodels: None xarray: None IPython: 5.3.0 sphinx: None patsy: None dateutil: 2.6.0 pytz: 2014.10 blosc: None bottleneck: None tables: None numexpr: None matplotlib: None openpyxl: None xlrd: None xlwt: None xlsxwriter: None lxml: None bs4: 4.5.1 html5lib: 0.999999999 httplib2: 0.9.1 apiclient: None sqlalchemy: 1.0.14 pymysql: None psycopg2: None jinja2: 2.9.5 boto: None pandas_datareader: None </details>
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215,066,738
MDExOlB1bGxSZXF1ZXN0MTExMzI2MDM2
15,722
CI: remove caching for miniconda itself
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0
2017-03-17T17:10:53Z
2017-03-17T17:11:56Z
2017-03-17T17:11:56Z
CONTRIBUTOR
null
well got this to work, and it *does* cache, but the cache file is so huge that its just not worth it. going back to clean installs for miniconda itself.
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https://api.github.com/repos/pandas-dev/pandas/issues/15723
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215,076,026
MDU6SXNzdWUyMTUwNzYwMjY=
15,723
ERR: validate encoding on to_stata
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15
2017-03-17T17:48:10Z
2017-09-05T12:34:28Z
2017-03-21T21:54:22Z
NONE
null
It seems ``pandas`` in ``python3.5`` causes issues due to encoding. For example the following generates a corrupt output file ```python import pandas as pd df1 = pd.DataFrame(np.array([1,2,3,4]), columns=['var1']) df1.to_stata('corrupt.dta', write_index=False, encoding='utf8') ``` while ```python df1.to_stata('not-corrupt.dta', write_index=False) ``` generates a correct file. I imagine this may be due to use of encoding and the difference in the treatment between ``python 2`` and ``python 3``, which breaks compatibility of scripts across ``python`` versions. I guess it would be nice if it does not take this option into account on ``python 3``, unless the error is caused by something else.
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215,079,497
MDU6SXNzdWUyMTUwNzk0OTc=
15,724
to_hdf5 copies data, causes MemoryError
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1
2017-03-17T18:00:59Z
2017-03-17T18:03:23Z
2017-03-17T18:02:41Z
NONE
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#### Code Sample, a copy-pastable example if possible ```python result.to_hdf(op.join(args.output_dir, "merged.hd5"), "data", mode='w') ``` #### Problem description Even though my data fits in memory, I run out of memory when trying to save it to disk apparently because pandas makes copies: ``` Traceback (most recent call last): File "source/prof/merge_prof.py", line 144, in <module> main() File "source/prof/merge_prof.py", line 131, in main result.to_hdf(op.join(args.output_dir, "merged.hd5"), "data", mode='w') File "/home/jgarvin/.local/lib/python3.4/site-packages/pandas/core/generic.py", line 1138, in to_hdf return pytables.to_hdf(path_or_buf, key, self, **kwargs) File "/home/jgarvin/.local/lib/python3.4/site-packages/pandas/io/pytables.py", line 270, in to_hdf f(store) File "/home/jgarvin/.local/lib/python3.4/site-packages/pandas/io/pytables.py", line 264, in <lambda> f = lambda store: store.put(key, value, **kwargs) File "/home/jgarvin/.local/lib/python3.4/site-packages/pandas/io/pytables.py", line 873, in put self._write_to_group(key, value, append=append, **kwargs) File "/home/jgarvin/.local/lib/python3.4/site-packages/pandas/io/pytables.py", line 1315, in _write_to_group s.write(obj=value, append=append, complib=complib, **kwargs) File "/home/jgarvin/.local/lib/python3.4/site-packages/pandas/io/pytables.py", line 2877, in write self.write_array('block%d_values' % i, blk.values, items=blk_items) File "/home/jgarvin/.local/lib/python3.4/site-packages/pandas/io/pytables.py", line 2670, in write_array self._handle.create_array(self.group, key, value) File "/home/jgarvin/.local/lib/python3.4/site-packages/tables/file.py", line 1145, in create_array obj=obj, title=title, byteorder=byteorder) File "/home/jgarvin/.local/lib/python3.4/site-packages/tables/array.py", line 187, in __init__ byteorder, _log) File "/home/jgarvin/.local/lib/python3.4/site-packages/tables/leaf.py", line 270, in __init__ super(Leaf, self).__init__(parentnode, name, _log) File "/home/jgarvin/.local/lib/python3.4/site-packages/tables/node.py", line 266, in __init__ self._v_objectid = self._g_create() File "/home/jgarvin/.local/lib/python3.4/site-packages/tables/array.py", line 196, in _g_create nparr = array_as_internal(self._obj, flavor) File "/home/jgarvin/.local/lib/python3.4/site-packages/tables/flavor.py", line 180, in array_as_internal return array_of_flavor2(array, src_flavor, internal_flavor) File "/home/jgarvin/.local/lib/python3.4/site-packages/tables/flavor.py", line 133, in array_of_flavor2 return convfunc(array) File "/home/jgarvin/.local/lib/python3.4/site-packages/tables/flavor.py", line 373, in conv_to_numpy nparr = nparr.copy() # copying the array makes it contiguous MemoryError ``` #### Expected Output no exception ;) #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 3.4.3.final.0 python-bits: 64 OS: Linux OS-release: 3.13.0-85-generic machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: en_US.UTF-8 pandas: 0.19.2 nose: None pip: 1.5.4 setuptools: 3.3 Cython: None numpy: 1.12.0 scipy: 0.18.1 statsmodels: 0.8.0 xarray: None IPython: None sphinx: None patsy: 0.4.1 dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: None tables: 3.3.0 numexpr: 2.6.2 matplotlib: 2.0.0 openpyxl: None xlrd: None xlwt: None xlsxwriter: None lxml: None bs4: None html5lib: 0.999 httplib2: 0.8 apiclient: None sqlalchemy: None pymysql: None psycopg2: None jinja2: 2.9.5 boto: None pandas_datareader: None </details>
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BUG: HDFStore fixed format not decoding meta-data in PY3
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3
2017-03-17T21:06:22Z
2021-05-08T01:30:56Z
null
MEMBER
null
#### Code Sample, a copy-pastable example if possible In Python 2: ```python df = pd.DataFrame([[1, 2], [3, 4]]) df.index.name = "date" df.to_hdf('/tmp/test.hdf', 'test') ``` In Python 3: ```python In [2]: pd.read_hdf('/tmp/test.hdf', 'test') Out[2]: 0 1 b'date' 0 1 2 1 3 4 ``` #### Problem description ``b'date'`` should actually be just ``date`` #### Expected Output ``` python Out[2]: 0 1 date 0 1 2 1 3 4 ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 3.5.3.final.0 python-bits: 64 OS: Linux OS-release: 4.7.0-1-amd64 machine: x86_64 processor: byteorder: little LC_ALL: None LANG: it_IT.utf8 LOCALE: it_IT.UTF-8 pandas: 0.19.0+603.g2cad4dd0b pytest: 3.0.6 pip: 9.0.1 setuptools: 33.1.1 Cython: 0.25.2 numpy: 1.12.0 scipy: 0.18.1 xarray: 0.9.1 IPython: 5.1.0.dev sphinx: 1.4.9 patsy: 0.3.0-dev dateutil: 2.5.3 pytz: 2016.7 blosc: None bottleneck: 1.2.0 tables: 3.3.0 numexpr: 2.6.1 feather: 0.3.1 matplotlib: 2.0.0 openpyxl: 2.3.0 xlrd: 1.0.0 xlwt: 1.1.2 xlsxwriter: 0.9.6 lxml: 3.7.1 bs4: 4.5.3 html5lib: 0.999999999 sqlalchemy: 1.0.15 pymysql: None psycopg2: None jinja2: 2.8 s3fs: None pandas_gbq: None pandas_datareader: 0.2.1 </details>
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215,131,860
MDU6SXNzdWUyMTUxMzE4NjA=
15,726
Groupby on date component results in corrupt DataFrame
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6
2017-03-17T21:54:34Z
2017-03-18T10:59:38Z
2017-03-17T22:01:26Z
MEMBER
null
#### Code Sample, a copy-pastable example if possible ```python In [3]: df1 = pd.DataFrame({c : np.random.random(4) for c in ['a', 'b']}) In [4]: date = pd.DataFrame({'day' : 15, 'month' : df1.index + 1, 'year' : 2009}) In [5]: df1['date'] = pd.to_datetime(date) In [6]: df1['month'] = df1['date'].dt.month In [7]: df2 = df1.groupby('month').max() In [8]: df2.transpose().mean() Out[8]: Series([], dtype: float64) ``` #### Problem description ``df2`` had strictly positive dimensions, its mean cannot be an empty ``Series``. #### Expected Output The same as ``` python In [9]: df2.mean(axis=1) Out[9]: month 1 0.649630 2 0.392446 3 0.693638 12 0.381830 dtype: float64 ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 3.5.3.final.0 python-bits: 64 OS: Linux OS-release: 4.7.0-1-amd64 machine: x86_64 processor: byteorder: little LC_ALL: None LANG: it_IT.utf8 LOCALE: it_IT.UTF-8 pandas: 0.19.0+603.g2cad4dd0b pytest: 3.0.6 pip: 9.0.1 setuptools: 33.1.1 Cython: 0.25.2 numpy: 1.12.0 scipy: 0.18.1 xarray: 0.9.1 IPython: 5.1.0.dev sphinx: 1.4.9 patsy: 0.3.0-dev dateutil: 2.5.3 pytz: 2016.7 blosc: None bottleneck: 1.2.0 tables: 3.3.0 numexpr: 2.6.1 feather: 0.3.1 matplotlib: 2.0.0 openpyxl: 2.3.0 xlrd: 1.0.0 xlwt: 1.1.2 xlsxwriter: 0.9.6 lxml: 3.7.1 bs4: 4.5.3 html5lib: 0.999999999 sqlalchemy: 1.0.15 pymysql: None psycopg2: None jinja2: 2.8 s3fs: None pandas_gbq: None pandas_datareader: 0.2.1 </details>
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data input column name
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2
2017-03-17T23:00:29Z
2017-03-18T10:24:48Z
2017-03-18T00:10:23Z
NONE
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#### Code Sample, a copy-pastable example if possible ``` a = df[(df.Gold>=1)&(df.Gold.1>=1)] ``` #### Problem description when I input a data series, it automatically name the variable name to 'Gold' and 'Gold 1' because the input has two 'Gold' column. which leads to an issue when I want to use indexing. The dot is recognized as "Invalid Syntax". My solution is to rename the column but I wonder if I miss anything or actually we can automatically name them as 'Gold_1' instead of 'Gold.1' when this situation occur.
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15,728
CI: install nomkl to speed building
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2017-03-18T02:10:56Z
2017-03-18T02:51:36Z
2017-03-18T02:51:36Z
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null
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215,163,182
MDExOlB1bGxSZXF1ZXN0MTExMzk1MDA5
15,729
DOC: Fix typos in merge_asof() docstring
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1
2017-03-18T03:29:38Z
2017-03-18T04:00:32Z
2017-03-18T03:32:47Z
CONTRIBUTOR
null
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215,202,261
MDExOlB1bGxSZXF1ZXN0MTExNDE0NTc5
15,730
CI: remove 3.5 appveyor build
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0
2017-03-18T15:45:35Z
2017-03-18T16:02:10Z
2017-03-18T16:02:10Z
CONTRIBUTOR
null
not really necessary & just makes the building take longer
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215,202,337
MDExOlB1bGxSZXF1ZXN0MTExNDE0NjIx
15,731
TST: move conftest.py to top-level
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7
2017-03-18T15:46:43Z
2017-03-21T00:14:28Z
2017-03-18T16:01:20Z
CONTRIBUTOR
null
xref #15341
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215,202,886
MDU6SXNzdWUyMTUyMDI4ODY=
15,732
OverflowError converting str to int in dataframe on win32
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3
2017-03-18T15:56:47Z
2017-03-18T16:22:04Z
2017-03-18T16:04:38Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python df = pd.DataFrame() df.loc[1, 'timestamp'] = '1489687200000' df.timestamp.astype(int) ``` #### Problem description Results in error: ``` OverflowError Traceback (most recent call last) <ipython-input-51-aa072084e764> in <module>() 1 df = pd.DataFrame() 2 df.loc[1, 'timestamp'] = '1489687200000' ----> 3 df.timestamp.astype(int) C:\Users\Marco\anaconda\lib\site-packages\pandas\core\generic.py in astype(self, dtype, copy, raise_on_error, **kwargs) 3052 # else, only a single dtype is given 3053 new_data = self._data.astype(dtype=dtype, copy=copy, -> 3054 raise_on_error=raise_on_error, **kwargs) 3055 return self._constructor(new_data).__finalize__(self) 3056 C:\Users\Marco\anaconda\lib\site-packages\pandas\core\internals.py in astype(self, dtype, **kwargs) 3187 3188 def astype(self, dtype, **kwargs): -> 3189 return self.apply('astype', dtype=dtype, **kwargs) 3190 3191 def convert(self, **kwargs): C:\Users\Marco\anaconda\lib\site-packages\pandas\core\internals.py in apply(self, f, axes, filter, do_integrity_check, consolidate, **kwargs) 3054 3055 kwargs['mgr'] = self -> 3056 applied = getattr(b, f)(**kwargs) 3057 result_blocks = _extend_blocks(applied, result_blocks) 3058 C:\Users\Marco\anaconda\lib\site-packages\pandas\core\internals.py in astype(self, dtype, copy, raise_on_error, values, **kwargs) 459 **kwargs): 460 return self._astype(dtype, copy=copy, raise_on_error=raise_on_error, --> 461 values=values, **kwargs) 462 463 def _astype(self, dtype, copy=False, raise_on_error=True, values=None, C:\Users\Marco\anaconda\lib\site-packages\pandas\core\internals.py in _astype(self, dtype, copy, raise_on_error, values, klass, mgr, **kwargs) 502 503 # _astype_nansafe works fine with 1-d only --> 504 values = _astype_nansafe(values.ravel(), dtype, copy=True) 505 values = values.reshape(self.shape) 506 C:\Users\Marco\anaconda\lib\site-packages\pandas\types\cast.py in _astype_nansafe(arr, dtype, copy) 532 elif arr.dtype == np.object_ and np.issubdtype(dtype.type, np.integer): 533 # work around NumPy brokenness, #1987 --> 534 return lib.astype_intsafe(arr.ravel(), dtype).reshape(arr.shape) 535 536 if copy: pandas\lib.pyx in pandas.lib.astype_intsafe (pandas\lib.c:17409)() pandas\src\util.pxd in util.set_value_at_unsafe (pandas\lib.c:72777)() OverflowError: Python int too large to convert to C long ``` #### Expected Output On macos this works fine, but unfortunately I have to migrate a project to windows and there it does not work. I'm running the latest anaconda for win32 on windows 7. int('1489687200000') works fine, also using df.timestamp.astype(np.int64) instead of astype(int) works. That's also my workaround right now. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 3.6.0.final.0 python-bits: 32 OS: Windows OS-release: 7 machine: AMD64 processor: Intel64 Family 6 Model 70 Stepping 1, GenuineIntel byteorder: little LC_ALL: None LANG: None LOCALE: None.None pandas: 0.19.2 nose: 1.3.7 pip: 9.0.1 setuptools: 27.2.0 Cython: 0.25.2 numpy: 1.11.3 scipy: 0.18.1 statsmodels: 0.6.1 xarray: None IPython: 5.1.0 sphinx: 1.5.1 patsy: 0.4.1 dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: 1.2.0 tables: 3.2.2 numexpr: 2.6.1 matplotlib: 2.0.0 openpyxl: 2.4.1 xlrd: 1.0.0 xlwt: 1.2.0 xlsxwriter: 0.9.6 lxml: 3.7.2 bs4: 4.5.3 html5lib: None httplib2: None apiclient: None sqlalchemy: 1.1.5 pymysql: None psycopg2: None jinja2: 2.9.4 boto: 2.45.0 pandas_datareader: 0.2.1 </details>
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15,733
CI: turn on cache for osx
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2017-03-18T16:50:20Z
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2017-03-19T01:16:36Z
2017-03-19T02:08:50Z
2017-03-19T02:02:21Z
MEMBER
null
Affected classes: 1) `Index` 2) `Series` 2) `DataFrame` xref #10726
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15,736
Value returns ndarray for dataframes with a single column with datetime64 tz-aware
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2017-03-19T20:08:37Z
2017-07-26T23:57:54Z
2017-07-26T23:57:53Z
CONTRIBUTOR
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- [x] closes #14052 - [x] tests added / passed - [x] passes ``git diff upstream/master | flake8 --diff`` - [x] whatsnew entry
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BUG: concat with sparse not propogating default_fill_value
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2
2017-03-20T00:26:46Z
2019-09-18T14:02:15Z
2019-09-18T14:02:15Z
CONTRIBUTOR
null
from https://github.com/pandas-dev/pandas/issues/12174#issuecomment-287594124 ``` In [1]: df = pd.SparseDataFrame(np.random.choice([0., 1.], size=(5,5)), default_fill_value=0.) ...: In [2]: df Out[2]: 0 1 2 3 4 0 0.0 1.0 1.0 0.0 0.0 1 1.0 1.0 1.0 0.0 1.0 2 0.0 1.0 0.0 1.0 0.0 3 1.0 1.0 1.0 0.0 1.0 4 1.0 0.0 0.0 1.0 1.0 In [3]: df.default_fill_value Out[3]: 0.0 In [4]: pd.concat((df, df), axis=1) Out[4]: 0 1 2 3 4 0 1 2 3 4 0 0.0 1.0 1.0 0.0 0.0 0.0 1.0 1.0 0.0 0.0 1 1.0 1.0 1.0 0.0 1.0 1.0 1.0 1.0 0.0 1.0 2 0.0 1.0 0.0 1.0 0.0 0.0 1.0 0.0 1.0 0.0 3 1.0 1.0 1.0 0.0 1.0 1.0 1.0 1.0 0.0 1.0 4 1.0 0.0 0.0 1.0 1.0 1.0 0.0 0.0 1.0 1.0 In [5]: pd.concat((df, df), axis=1).default_fill_value Out[5]: nan ```
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PERF: Improve drop_duplicates for bool columns (#12963)
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2017-03-20T02:05:03Z
2017-12-20T02:00:38Z
2017-03-20T22:47:22Z
MEMBER
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- [x] closes #12963 - [x] tests passed - [x] passes ``git diff upstream/master | flake8 --diff`` - [x] whatsnew entry Converts `bool` columns to `int` when calling `drop_duplicates()` so the factorization does not go down the `object` path. ``` before after ratio [9ab57dc5] [4b05fccb] - 10.2±0.01ms 4.68±0.01ms 0.46 reindex.Duplicates.time_frame_drop_dups_bool SOME BENCHMARKS HAVE CHANGED SIGNIFICANTLY. ```
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BUG: tz aware Timestamp field accessors returns local values (#13303)
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2017-03-20T06:20:20Z
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- [x] closes #13303 - [x] tests added / passed - [x] passes ``git diff upstream/master | flake8 --diff`` - [x] whatsnew entry Previously, calling a date/time attribute with Timestamp that's tz aware (e.g. `Timestamp('...', tz='...').dayofyear`) would return the attribute in UTC instead of the local tz.
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2017-03-20T14:17:19Z
2017-03-20T14:17:36Z
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CONTRIBUTOR
null
closes #12747 supersedes 12780
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15,742
BUG: replace coerces incorrect dtype
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1
2017-03-20T14:22:06Z
2017-03-20T17:22:51Z
2017-03-20T16:25:54Z
CONTRIBUTOR
null
closes #12747 Author: sinhrks <[email protected]> This patch had conflicts when merged, resolved by Committer: Jeff Reback <[email protected]> closes #15742 Closes #12780 from sinhrks/replace_type and squashes the following commits: f9154e8 [sinhrks] remove unnecessary comments 279fdf6 [sinhrks] remove import failure de44877 [sinhrks] BUG: replace coerces incorrect dtype
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15,743
BUG: replace of numeric by string / dtype coversion
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2
2017-03-20T14:33:55Z
2017-03-28T18:27:00Z
2017-03-28T18:27:00Z
CONTRIBUTOR
null
xref #12747 This was an item not closed by #12780 (but listed in #12747) ``` In [2]: pd.Series([1,2,3]).replace('1', np.nan) Out[2]: 0 NaN 1 2.0 2 3.0 dtype: float64 ```
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215,467,718
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15,744
Return mode even if single value (#15714)
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6
2017-03-20T15:59:20Z
2017-03-29T23:54:14Z
2017-03-29T23:53:57Z
CONTRIBUTOR
null
- [X] Please accept this PR which closes #15714 - [X] Tests added — `test_mode_single` - [X] Passes ``git diff upstream/master | flake8 --diff`` (however: it complains about some non-changed rows in hashtable_func_helper.pxi.in)
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15,745
CLN: define .mode in terms of value_counts
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6
2017-03-20T16:42:47Z
2021-05-08T01:31:16Z
null
CONTRIBUTOR
null
we have quite a lot of code to support .mode (internally we use pretty much the same algos as ``.value_counts()``) but unless I am not understanding isn't. ``x.mode() == x.value_counts(sort=True).index[0]`` ? if ties, then return a slice of the result e.g. ``` In [17]: Series([1, 1, 1, 2, 2, 2, 3]).value_counts() Out[17]: 2 3 1 3 3 1 dtype: int64 In [18]: Series([1, 1, 1, 2, 2, 2, 3]).mode() Out[18]: 0 1 1 2 dtype: int64 ``` cc @TomAugspurger
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CLN: make _Indexer.obj a weak ref
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2017-03-20T17:22:09Z
2017-10-27T20:33:42Z
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CONTRIBUTOR
null
This will allow pandas objects to be collected on the first generation of the gc rather than wait for it to break cycles. Practically I am not sure this will have much of a user change. https://github.com/dask/distributed/issues/956#issuecomment-287783490 The idea is to change this code [here](https://github.com/pandas-dev/pandas/blob/master/pandas/core/indexing.py#L93) from ``` class _NDFrameIndexer(object): _valid_types = None _exception = KeyError axis = None def __init__(self, obj, name): self.obj = obj self.ndim = obj.ndim self.name = name ``` to ``` class _NDFrameIndexer(object): _valid_types = None _exception = KeyError axis = None def __init__(self, obj, name): self.obj = weakref.ref(obj) self.ndim = obj.ndim self.name = name ``` and corresponding ``self.obj`` to ``self.obj()`` it 'works' in that gc collection happens immedately upon object deletion (IOW ``del df``). but a few fails on caching / chaining. In particular tests like: https://github.com/pandas-dev/pandas/blob/master/pandas/tests/indexing/test_chaining_and_caching.py#L31 I think were relying upon the reference NOT being collected (so that they can check it). So this would require some internal reworking to remove / fix this. I suspect we will still achieve the same user effects (meaning of detection of chaining etc).
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MDU6SXNzdWUyMTU1MTI4OTc=
15,747
Proposal to change behaviour with .loc and missing keys
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31
2017-03-20T18:25:07Z
2020-05-12T16:39:37Z
2017-10-03T10:55:51Z
MEMBER
null
```python In [2]: pd.Series([1, 2, 3]).loc[[2,3]] Out[2]: 2 3.0 3 NaN dtype: float64 In [3]: pd.Series([1, 2, 3]).loc[[3]] [...] KeyError: 'None of [[3]] are in the [index]' ``` #### Problem description Although coherent (except for some unfortunate side-effects - some of them below) with the [docs](http://pandas.pydata.org/pandas-docs/stable/indexing.html#selection-by-label) where they say "At least 1 of the labels for which you ask, must be in the index or a ``KeyError`` will be raised!", the current behavior is - I claim - a terrible choice for both developers and users. There are (at least) three ways to behave with missing labels: 1. you raise an error if requested at least one missing label 2. you raise an error if requested _only_ missing labels 2a ... while if at least one label is present, missing labels become ``NaN`` __(current)__ 2b. ... while if at least one label is present, missing labels are silently dropped 3. you never raise an error for missing labels 3a ... and they become ``NaN`` 3b. ... and they are silently dropped #### For developers Options 1. and 3. are both much easier to implement, because in both cases you can reduce the question "am I going to get an error?" in smaller pieces - e.g. when indexing a ``MultiIndex``, you will get an error if you get an error on any of its levels. Option 2. is instead more complicated (and computationally expensive), because you need to first aggregate in some way across levels/axes, and only then can you decide whether to raise an error or not. Several incoherences came out as a consequence of this choice, some of them still unsolved, such as #15452, [this](https://github.com/pandas-dev/pandas/pull/15615#issuecomment-287826997), the fact that ``pd.Series(range(2)).loc[[]]`` does not raise, and the fact that ``pd.DataFrame.ix[[missing_label]]`` doesn't either. #### Other consequences of 2. Additionally, it was decided that the behavior with missing labels would be to introduce ``NaN``s (rather than to drop them), and I think this was also not a good choice (and indeed partial indexing ``MultiIndex``es does not behave this way - it couldn't). I think it is also undocumented. And finally, since the above wouldn't always tell you what to do when there are missing labels in a ``MultiIndex``, it was decided that ``.loc`` would rather behave as ``.reindex`` when there are missing _and incomplete_ labels, which is totally unexpected and, I think, undocumented. Notice that these further issues (and more in general, the question "what to do when some labels are missing and you are not raising an error") would partially still hold with 3, but could be dealt with, I think, more elegantly. #### For users I think the current behavior is annoying to users not just because of those "__Other consequences__", but also because it is more complicated to describe in terms of set operation on labels/indices. For instance, with options 1. and 3. ``pd.concat([chunk.loc[something] for chunk in chunks])`` and ``pd.concat(chunks).loc[something]`` both return the same result (or raise). Instead with 2. it actually depends on how missing labels are distributed across chunks. #### (Why this?) It is worth understanding why 2. was picked in the first place, and I think the answer is "to be coherent with intervals". But I think it's not worth the damage - after all, an iterable and an interval are different objects. And moreover, introducing ``NaN``s for missing labels is anyway incoherent with intervals. #### Backward incompatibility Option 1. is, I think, the best, because it is also coherent with numpy's behavior with out-of-bounds indices (e.g. ``np.array([[1,2], [3,4]])[0,[1,3]]`` raises an ``IndexError``). But while clearly both 1. and 3. could break some existing code, 3. would be better from this point of view, in the sense that it would break only code _assuming_ that an error is raised. Although one might even claim that 1., by breaking code which looks for missing labels, can help discover bugs in user code (not a great argument, I know). So overall I am not sure about what we should pick between 1. and 3. But I really think we should leave 2., and that the later it is done, the worse. @jreback , @jorisvandenbossche if you want to tell me your thoughts about this, I can elaborate on what we could do with the "__Other consequences__" in the desired option. Then if you approve the change, I'm willing to help in implementing it.
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15,748
MAINT: Remove Long and WidePanel
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6
2017-03-20T18:26:53Z
2017-03-21T00:39:17Z
2017-03-20T19:47:49Z
MEMBER
null
Deprecated since 0.17.0. xref #10892
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15,749
DOC: Patch new flake8 command grep
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1
2017-03-20T19:01:50Z
2017-03-21T00:39:14Z
2017-03-20T19:39:25Z
MEMBER
null
The grep was initially matching to "pandas," which is incorrect because that was also matching files containing "pandas" in the name but that were not in the main `pandas` directory (e.g. performance test code). This change enforces that we match to any Python files in the main `pandas` directory. Also picked up compatibility issue with OSX, in which the `-r` flag does not exist. However, `xargs` terminates if the argument list is empty, which was the whole point of passing in `-r` in the first place. Follow-up to #15712
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15,750
API: Series.values with tz-aware should return object array of Timestamps
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7
2017-03-20T19:28:20Z
2019-01-05T14:51:12Z
2019-01-05T14:51:12Z
CONTRIBUTOR
null
xref #14052 discussed at bit in the original PR: https://github.com/pandas-dev/pandas/pull/10477 I think was a mistake to return a ``datetime64[ns]`` in UTC for a tz-aware Series. we should simply return an object array of ``Timestamps``, as it round-trips correctly. IOW, you don't lose the timezones. ``` tz-naive In [9]: Series(pd.date_range('20130101',periods=3)).values Out[9]: array(['2013-01-01T00:00:00.000000000', '2013-01-02T00:00:00.000000000', '2013-01-03T00:00:00.000000000'], dtype='datetime64[ns]') tz-aware - currently In [10]: Series(pd.date_range('20130101',periods=3, tz='US/Eastern')).values Out[10]: array(['2013-01-01T05:00:00.000000000', '2013-01-02T05:00:00.000000000', '2013-01-03T05:00:00.000000000'], dtype='datetime64[ns]') ``` what we should do ``` In [15]: np.array(Series(pd.date_range('20130101',periods=3, tz='US/Eastern')).tolist()) Out[15]: array([Timestamp('2013-01-01 00:00:00-0500', tz='US/Eastern'), Timestamp('2013-01-02 00:00:00-0500', tz='US/Eastern'), Timestamp('2013-01-03 00:00:00-0500', tz='US/Eastern')], dtype=object) ``` round trips are plainly wrong (current) ``` In [5]: arr = Series(pd.date_range('20130101',periods=3, tz='US/Eastern')) In [6]: Series(arr.values) Out[6]: 0 2013-01-01 05:00:00 1 2013-01-02 05:00:00 2 2013-01-03 05:00:00 dtype: datetime64[ns] ``` round-trips are preserved (proposed) ``` In [3]: arr = np.array(Series(pd.date_range('20130101',periods=3, tz='US/Eastern')).tolist()) In [4]: Series(arr) Out[4]: 0 2013-01-01 00:00:00-05:00 1 2013-01-02 00:00:00-05:00 2 2013-01-03 00:00:00-05:00 dtype: datetime64[ns, US/Eastern] ``` I don't think there is any way to transition to this and we simply have to change it. `
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1
2017-03-20T22:52:19Z
2021-05-08T01:31:34Z
null
CONTRIBUTOR
null
xref https://github.com/pandas-dev/pandas/pull/15738#issuecomment-287843016 Currently bool data is passed to the generic python object hashtable for the following methods, making them all very slow. - [ ] `value_counts` - [ ] `rank` - [ ] `unique` Linked PR casts to int for `factorize`, `duplicated`, `drop_duplicates` We could skip the hashing altogether and take advantage of the fixed set of values, e.g. below is a fastpath for unique. ```python %%cython from numpy cimport uint8_t cimport cython import numpy as np @cython.boundscheck(False) @cython.wraparound(False) def unique(uint8_t[:] data): cdef: bint seen_true = False bint seen_false = False Py_ssize_t i, N = len(data) uint8_t val with nogil: for i in range(N): val = data[i] if val == 0: seen_false = True elif val == 1: seen_true = True if seen_true and seen_false: break if seen_true and seen_false: return np.array([True, False]) elif seen_true: return np.array([True]) elif seen_false: return np.array([False]) else: return np.array([], dtype=bool) In [35]: bools = np.array([False, True] * 100000) In [36]: %timeit pd.unique(bools.view('uint8')).astype(bool) 1000 loops, best of 3: 1.74 ms per loop In [37]: %timeit unique(bools.view('uint8')) 100000 loops, best of 3: 3.47 µs per loop ```
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15,752
TST: full dtype tests for .drop_duplicates and .duplicated
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1
2017-03-20T23:08:42Z
2021-05-08T01:31:58Z
null
CONTRIBUTOR
null
https://github.com/pandas-dev/pandas/pull/15738#issuecomment-287925070 xref #15738 we exercise tests for ``.drop_duplicates`` & ``.duplicated`` in various places - for series -> ``pandas/tests/series/test_analytics.py`` - for dataframe -> ``pandas/test/frame/test_analytics.py`` - for index -> ``pandas/tests/test_base.py`` - ``datetimes`` -> ``pandas/tests//indexes/datetimes/test_ops.py`` - ``period`` -> ``pandas/tests//indexes/period/test_ops.py`` - ``categorical`` -> ``pandas/tests//test_categorical.py`` - ``timedelta`` -> ``pandas/tests//indexes/timedeltas/test_ops.py`` I think we are a little light on the ``categorical`` ones (esp need to exercise with categories of int, datetime, timedelta, bool) ``bool`` and a battery that covers all ``int`` & ``uint`` & ``float`` would be nice as well. could certainly take multiple PR's to close this issue (if multiple people want to do this).
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BUG: PandasAutoDateLocator num_days calculation is wrong
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7
2017-03-20T23:51:57Z
2017-03-21T15:49:03Z
2017-03-21T08:53:20Z
NONE
null
This line in PandasAutoDateLocator looks like it's missing some parentheses. https://github.com/pandas-dev/pandas/blob/master/pandas/tseries/converter.py#L264 num_days = ((delta.years * 12.0) + delta.months * 31.0) + delta.days I stepped through here and with a delta of 5 years, num_days was 60! It's easy enough to fix: num_days = (((delta.years * 12.0) + delta.months) * 31.0) + delta.days
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15,754
BUG: Series.plot x-axis labels are off by one year when a timezone is involved
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2017-03-21T16:50:08Z
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```python %matplotlib inline import numpy as np import pandas as pd import matplotlib.pyplot as plt pd.show_versions() index = np.array([ '2011-10-01 09:00', '2016-10-01 09:00', ], dtype='datetime64[ns]') values = np.array([ -0.26, -0.01, ]) data_utc = pd.Series(values, index) data_utc.index = data_utc.index.tz_localize('UTC') data_eastern = pd.Series(values, index) data_eastern.index = data_eastern.index.tz_localize('UTC').tz_convert('US/Eastern') data_utc.plot(title='UTC') plt.figure() data_eastern.plot(title='US/Eastern') plt.figure() ``` With the Eastern time zone, the x-axis labels are off by a year. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 2.7.13.final.0 python-bits: 64 OS: Linux OS-release: 3.10.0-229.4.2.el7.x86_64 machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: C LOCALE: None.None pandas: 0.19.2 nose: None pip: 9.0.1 setuptools: 27.2.0 Cython: None numpy: 1.12.0 scipy: None statsmodels: None xarray: None IPython: 5.3.0 sphinx: None patsy: None dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: None tables: None numexpr: None matplotlib: 2.0.0 openpyxl: None xlrd: None xlwt: None xlsxwriter: None lxml: None bs4: None html5lib: 0.999 httplib2: None apiclient: None sqlalchemy: None pymysql: None psycopg2: None jinja2: 2.9.5 boto: None pandas_datareader: None </details> ![image](https://cloud.githubusercontent.com/assets/507004/24127232/6200f6ac-0d90-11e7-8570-25f7949e12a0.png) ![image](https://cloud.githubusercontent.com/assets/507004/24127237/664df912-0d90-11e7-94cd-367fe17975aa.png)
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15,755
nrows incompatible with chunksize in read_csv
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2017-03-21T00:25:11Z
2017-03-21T18:06:01Z
2017-03-21T18:06:01Z
MEMBER
null
#### Code Sample, a copy-pastable example if possible ```python In [2]: pd.read_csv('/tmp/boh.csv', nrows=10, chunksize=2) --------------------------------------------------------------------------- NotImplementedError Traceback (most recent call last) <ipython-input-2-c652c48282ad> in <module>() ----> 1 pd.read_csv('/tmp/boh.csv', nrows=10, chunksize=2) /home/nobackup/repo/pandas/pandas/io/parsers.py in parser_f(filepath_or_buffer, sep, delimiter, header, names, index_col, usecols, squeeze, prefix, mangle_dupe_cols, dtype, engine, converters, true_values, false_values, skipinitialspace, skiprows, nrows, na_values, keep_default_na, na_filter, verbose, skip_blank_lines, parse_dates, infer_datetime_format, keep_date_col, date_parser, dayfirst, iterator, chunksize, compression, thousands, decimal, lineterminator, quotechar, quoting, escapechar, comment, encoding, dialect, tupleize_cols, error_bad_lines, warn_bad_lines, skipfooter, skip_footer, doublequote, delim_whitespace, as_recarray, compact_ints, use_unsigned, low_memory, buffer_lines, memory_map, float_precision) 651 skip_blank_lines=skip_blank_lines) 652 --> 653 return _read(filepath_or_buffer, kwds) 654 655 parser_f.__name__ = name /home/nobackup/repo/pandas/pandas/io/parsers.py in _read(filepath_or_buffer, kwds) 391 392 if (nrows is not None) and (chunksize is not None): --> 393 raise NotImplementedError("'nrows' and 'chunksize' cannot be used" 394 " together yet.") 395 elif nrows is not None: NotImplementedError: 'nrows' and 'chunksize' cannot be used together yet. ``` (as introduced by #6774 ) #### Problem description Supporting them together is not complicated - PR on its way.
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ENH: support "nrows" and "chunksize" together
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12
2017-03-21T00:41:13Z
2017-03-21T18:54:48Z
2017-03-21T18:06:01Z
MEMBER
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- [x] closes #15755 - [x] tests added / passed - [x] passes ``git diff master | flake8 --diff`` (except for ``whatsnew/v0.20.0.txt``, I don't know why) - [x] whatsnew entry
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MAINT: Drop convert_objects from NDFrame
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27
2017-03-21T01:46:21Z
2017-07-13T14:49:37Z
2017-07-13T14:34:28Z
MEMBER
null
Deprecated since 0.17.0 xref #11173
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BUG: Series.asof fails for all NaN Series (GH15713)
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6
2017-03-21T03:05:24Z
2017-03-26T04:01:09Z
2017-03-26T02:31:15Z
CONTRIBUTOR
null
- [x] closes bug #15713 - [x] 1 tests added / passed - [x] passes ``git diff upstream/master | flake8 --diff`` - [x] whatsnew entry Added the test if the series is all nans Added the code that check if that's the case: if yes, return the expected output As this is my first contribution, please comment if I did it right :) Thanks!
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Pandas ticker to ohlc
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1
2017-03-21T05:41:06Z
2017-03-21T10:19:05Z
2017-03-21T10:19:05Z
NONE
null
pandas (0.19.2) rows is a list of dict from mysql. rows example [{'date': datetime.datetime(2017, 3, 21, 13, 27, 20), 'tid': 648605515L, 'price': Decimal('1080.04000000'), 'type': 1, 'amount': Decimal('10.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 20), 'tid': 648605549L, 'price': Decimal('1081.55000000'), 'type': 1, 'amount': Decimal('16.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 20), 'tid': 648605547L, 'price': Decimal('1081.33000000'), 'type': 1, 'amount': Decimal('20.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 20), 'tid': 648605545L, 'price': Decimal('1081.30000000'), 'type': 1, 'amount': Decimal('16.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 20), 'tid': 648605543L, 'price': Decimal('1081.29000000'), 'type': 1, 'amount': Decimal('20.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 20), 'tid': 648605541L, 'price': Decimal('1080.46000000'), 'type': 1, 'amount': Decimal('26.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 20), 'tid': 648605517L, 'price': Decimal('1080.04000000'), 'type': 1, 'amount': Decimal('8.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 22), 'tid': 648605601L, 'price': Decimal('1079.69000000'), 'type': -1, 'amount': Decimal('70.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 25), 'tid': 648605686L, 'price': Decimal('1079.72000000'), 'type': -1, 'amount': Decimal('4.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 26), 'tid': 648605765L, 'price': Decimal('1079.45000000'), 'type': 1, 'amount': Decimal('6.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 26), 'tid': 648605753L, 'price': Decimal('1079.60000000'), 'type': -1, 'amount': Decimal('106.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 26), 'tid': 648605751L, 'price': Decimal('1079.60000000'), 'type': -1, 'amount': Decimal('80.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 26), 'tid': 648605749L, 'price': Decimal('1079.67000000'), 'type': -1, 'amount': Decimal('430.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 26), 'tid': 648605747L, 'price': Decimal('1079.70000000'), 'type': -1, 'amount': Decimal('66.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 26), 'tid': 648605745L, 'price': Decimal('1079.74000000'), 'type': -1, 'amount': Decimal('12.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 27), 'tid': 648605785L, 'price': Decimal('1079.45000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 27), 'tid': 648605774L, 'price': Decimal('1079.45000000'), 'type': 1, 'amount': Decimal('6.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 27), 'tid': 648605771L, 'price': Decimal('1079.45000000'), 'type': 1, 'amount': Decimal('14.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 28), 'tid': 648605827L, 'price': Decimal('1079.45000000'), 'type': 1, 'amount': Decimal('42.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 28), 'tid': 648605842L, 'price': Decimal('1079.45000000'), 'type': 1, 'amount': Decimal('10.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 32), 'tid': 648605973L, 'price': Decimal('1079.45000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 37), 'tid': 648606114L, 'price': Decimal('1079.44000000'), 'type': 1, 'amount': Decimal('24.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 37), 'tid': 648606116L, 'price': Decimal('1079.45000000'), 'type': 1, 'amount': Decimal('40.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 42), 'tid': 648606258L, 'price': Decimal('1079.45000000'), 'type': 1, 'amount': Decimal('56.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 45), 'tid': 648606345L, 'price': Decimal('1079.46000000'), 'type': -1, 'amount': Decimal('10.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 46), 'tid': 648606392L, 'price': Decimal('1079.69000000'), 'type': 1, 'amount': Decimal('44.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 48), 'tid': 648606418L, 'price': Decimal('1079.60000000'), 'type': -1, 'amount': Decimal('40.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 48), 'tid': 648606420L, 'price': Decimal('1079.46000000'), 'type': -1, 'amount': Decimal('36.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 48), 'tid': 648606422L, 'price': Decimal('1079.46000000'), 'type': -1, 'amount': Decimal('94.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 50), 'tid': 648606499L, 'price': Decimal('1079.31000000'), 'type': 1, 'amount': Decimal('80.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 50), 'tid': 648606478L, 'price': Decimal('1079.31000000'), 'type': -1, 'amount': Decimal('6.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 50), 'tid': 648606476L, 'price': Decimal('1079.31000000'), 'type': -1, 'amount': Decimal('34.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 50), 'tid': 648606474L, 'price': Decimal('1079.55000000'), 'type': -1, 'amount': Decimal('8.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 55), 'tid': 648606666L, 'price': Decimal('1079.31000000'), 'type': 1, 'amount': Decimal('44.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 55), 'tid': 648606650L, 'price': Decimal('1079.17000000'), 'type': 1, 'amount': Decimal('8.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 27, 55), 'tid': 648606648L, 'price': Decimal('1079.17000000'), 'type': 1, 'amount': Decimal('8.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 1), 'tid': 648606820L, 'price': Decimal('1079.03000000'), 'type': -1, 'amount': Decimal('28.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 2), 'tid': 648606825L, 'price': Decimal('1079.03000000'), 'type': 1, 'amount': Decimal('30.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 2), 'tid': 648606836L, 'price': Decimal('1079.02000000'), 'type': -1, 'amount': Decimal('22.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 5), 'tid': 648606945L, 'price': Decimal('1078.58000000'), 'type': -1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 5), 'tid': 648606943L, 'price': Decimal('1078.61000000'), 'type': -1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 5), 'tid': 648606941L, 'price': Decimal('1078.63000000'), 'type': -1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 5), 'tid': 648606939L, 'price': Decimal('1078.88000000'), 'type': -1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 5), 'tid': 648606926L, 'price': Decimal('1078.88000000'), 'type': -1, 'amount': Decimal('428.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 6), 'tid': 648606984L, 'price': Decimal('1078.58000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 6), 'tid': 648606982L, 'price': Decimal('1078.05000000'), 'type': -1, 'amount': Decimal('10.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 6), 'tid': 648606971L, 'price': Decimal('1078.58000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 6), 'tid': 648606957L, 'price': Decimal('1078.05000000'), 'type': -1, 'amount': Decimal('74.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 6), 'tid': 648606955L, 'price': Decimal('1078.15000000'), 'type': -1, 'amount': Decimal('6.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 6), 'tid': 648606953L, 'price': Decimal('1078.15000000'), 'type': -1, 'amount': Decimal('14.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 6), 'tid': 648606951L, 'price': Decimal('1078.42000000'), 'type': -1, 'amount': Decimal('16.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 7), 'tid': 648606992L, 'price': Decimal('1078.05000000'), 'type': -1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 7), 'tid': 648606995L, 'price': Decimal('1078.58000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 7), 'tid': 648607023L, 'price': Decimal('1078.06000000'), 'type': -1, 'amount': Decimal('4.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 8), 'tid': 648607047L, 'price': Decimal('1078.86000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 10), 'tid': 648607113L, 'price': Decimal('1078.06000000'), 'type': -1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 10), 'tid': 648607115L, 'price': Decimal('1078.03000000'), 'type': -1, 'amount': Decimal('148.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 12), 'tid': 648607192L, 'price': Decimal('1079.00000000'), 'type': -1, 'amount': Decimal('10.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 13), 'tid': 648607218L, 'price': Decimal('1078.99000000'), 'type': 1, 'amount': Decimal('98.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 13), 'tid': 648607220L, 'price': Decimal('1079.00000000'), 'type': 1, 'amount': Decimal('42.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 13), 'tid': 648607222L, 'price': Decimal('1079.03000000'), 'type': 1, 'amount': Decimal('342.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 13), 'tid': 648607224L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('512.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 14), 'tid': 648607250L, 'price': Decimal('1078.98000000'), 'type': 1, 'amount': Decimal('44.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 14), 'tid': 648607252L, 'price': Decimal('1078.98000000'), 'type': 1, 'amount': Decimal('12.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 14), 'tid': 648607254L, 'price': Decimal('1079.00000000'), 'type': 1, 'amount': Decimal('106.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 14), 'tid': 648607256L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('40.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 20), 'tid': 648607431L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('28.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 20), 'tid': 648607429L, 'price': Decimal('1079.01000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 20), 'tid': 648607427L, 'price': Decimal('1079.01000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 23), 'tid': 648607518L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('8.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 24), 'tid': 648607544L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('344.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 25), 'tid': 648607593L, 'price': Decimal('1078.79000000'), 'type': -1, 'amount': Decimal('6.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 26), 'tid': 648607631L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('430.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 26), 'tid': 648607623L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('18.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 26), 'tid': 648607621L, 'price': Decimal('1078.79000000'), 'type': 1, 'amount': Decimal('14.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 29), 'tid': 648607695L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('776.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 32), 'tid': 648607803L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 32), 'tid': 648607805L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('10.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 36), 'tid': 648607905L, 'price': Decimal('1079.16000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 37), 'tid': 648607940L, 'price': Decimal('1079.31000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 42), 'tid': 648608110L, 'price': Decimal('1079.46000000'), 'type': -1, 'amount': Decimal('12.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 46), 'tid': 648608211L, 'price': Decimal('1079.88000000'), 'type': -1, 'amount': Decimal('12.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 46), 'tid': 648608213L, 'price': Decimal('1079.88000000'), 'type': -1, 'amount': Decimal('6.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 57), 'tid': 648608534L, 'price': Decimal('1080.29000000'), 'type': 1, 'amount': Decimal('14.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 28, 57), 'tid': 648608536L, 'price': Decimal('1080.30000000'), 'type': 1, 'amount': Decimal('2.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 29, 2), 'tid': 648608683L, 'price': Decimal('1080.59000000'), 'type': 1, 'amount': Decimal('40.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 29, 3), 'tid': 648608733L, 'price': Decimal('1080.59000000'), 'type': 1, 'amount': Decimal('360.00000000')}, {'date': datetime.datetime(2017, 3, 21, 13, 29, 7), 'tid': 648608838L, 'price': Decimal('1080.90000000'), 'type': 1, 'amount': Decimal('82.00000000')}] if I didn't use set_index ,it will have an `TypeError: Only valid with DatetimeIndex, TimedeltaIndex or PeriodIndex, but got an instance of 'RangeIndex'` if rows: df = pd.DataFrame(rows) print df.head() # TypeError: Only valid with DatetimeIndex, TimedeltaIndex or PeriodIndex, but got an instance of 'RangeIndex' df = df.set_index("date") print df.head() resample_data = df.resample("1min", how={"price": "ohlc", "amount": "sum"}) print resample_data Result : Connected to pydev debugger (build 162.1967.10) amount date price tid type 0 2.00000000 2017-03-21 11:15:12 1075.83000000 648370156 -1 1 10.00000000 2017-03-21 11:15:15 1076.00000000 648370241 -1 2 10.00000000 2017-03-21 11:15:17 1075.83000000 648370297 -1 3 10.00000000 2017-03-21 11:15:17 1075.83000000 648370311 1 4 8.00000000 2017-03-21 11:15:19 1076.13000000 648370370 1 amount price tid type date 2017-03-21 11:15:12 2.00000000 1075.83000000 648370156 -1 2017-03-21 11:15:15 10.00000000 1076.00000000 648370241 -1 2017-03-21 11:15:17 10.00000000 1075.83000000 648370297 -1 2017-03-21 11:15:17 10.00000000 1075.83000000 648370311 1 2017-03-21 11:15:19 8.00000000 1076.13000000 648370370 1 /Users/wyx/bitcoin_workspace/fibo-strategy/ticker.py:45: FutureWarning: how in .resample() is deprecated the new syntax is .resample(...)..apply(<func>) resample_data = df.resample("1min", how={"price": "ohlc", "amount": "sum"}) Traceback (most recent call last): File "/Applications/PyCharm.app/Contents/helpers/pydev/pydevd.py", line 1580, in <module> globals = debugger.run(setup['file'], None, None, is_module) File "/Applications/PyCharm.app/Contents/helpers/pydev/pydevd.py", line 964, in run pydev_imports.execfile(file, globals, locals) # execute the script File "/Users/wyx/bitcoin_workspace/fibo-strategy/ticker.py", line 45, in <module> resample_data = df.resample("1min", how={"price": "ohlc", "amount": "sum"}) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/core/generic.py", line 4216, in resample limit=limit) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/tseries/resample.py", line 582, in _maybe_process_deprecations r = r.aggregate(how) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/tseries/resample.py", line 320, in aggregate result, how = self._aggregate(arg, *args, **kwargs) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/core/base.py", line 549, in _aggregate result = _agg(arg, _agg_1dim) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/core/base.py", line 500, in _agg result[fname] = func(fname, agg_how) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/core/base.py", line 483, in _agg_1dim return colg.aggregate(how, _level=(_level or 0) + 1) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/core/groupby.py", line 2652, in aggregate return getattr(self, func_or_funcs)(*args, **kwargs) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/core/groupby.py", line 1128, in ohlc lambda x: x._cython_agg_general('ohlc')) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/core/groupby.py", line 3103, in _apply_to_column_groupbys return func(self) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/core/groupby.py", line 1128, in <lambda> lambda x: x._cython_agg_general('ohlc')) File "/Users/wyx/bitcoin_workspace/fibo-strategy/.env/lib/python2.7/site-packages/pandas/core/groupby.py", line 808, in _cython_agg_general raise DataError('No numeric types to aggregate') pandas.core.base.DataError: No numeric types to aggregate Process finished with exit code 1 I am a rookie for pandas. 1. How solve the error? 2. And if I want to use the last close price to fill the NaN of next min ohlc. How to do that?
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https://api.github.com/repos/pandas-dev/pandas/issues/15760
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MDU6SXNzdWUyMTU2MzkwODU=
15,760
BUG: to_datetime with utc=True for Series
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1
2017-03-21T06:15:42Z
2017-03-21T21:28:05Z
2017-03-21T08:49:03Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible ```javascript In [2]: ts = 1.4884427244831782e+18 In [3]: pd.to_datetime(ts, utc=True) Out[3]: Timestamp('2017-03-02 08:18:44.483178240+0000', tz='UTC') In [4]: pd.to_datetime([ts], utc=True) Out[4]: DatetimeIndex(['2017-03-02 08:18:44.483178240+00:00'], dtype='datetime64[ns, UTC]', freq=None) In [5]: pd.to_datetime(pd.Series([ts]), utc=True) Out[5]: 0 2017-03-02 08:18:44.483178240 dtype: datetime64[ns] ``` #### Problem description The argument ``utc=True`` in function ``to_datetime`` is not working when passing a ``Series``, differently from other case, e.g. when passing a list or a scalar Unix timestamp. #### Expected Output The expected output is the same as the one given by ```javascript In [6]: pd.to_datetime(pd.Series([ts])).dt.tz_localize('UTC') Out[6]: 0 2017-03-02 08:18:44.483178240+00:00 dtype: datetime64[ns, UTC] ``` #### Another example: `tz_convert` It is straightforward to convert to another time zone from a Unix timestamp or list: ```javascript In [7]: pd.to_datetime(ts, utc=True).tz_convert('Europe/Paris') Out[7]: Timestamp('2017-03-02 09:18:44.483178240+0100', tz='Europe/Paris') In [8]: pd.to_datetime([ts], utc=True).tz_convert('Europe/Paris') Out[8]: DatetimeIndex(['2017-03-02 09:18:44.483178240+01:00'], dtype='datetime64[ns, Europe/Paris]', freq=None) ``` whereas for a `Series`: ```javascript In [9]: pd.to_datetime(pd.Series([ts])).dt.tz_localize('UTC').dt.tz_convert('Europe/Paris') Out[9]: 0 2017-03-02 09:18:44.483178240+01:00 dtype: datetime64[ns, Europe/Paris] ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 3.5.2.final.0 python-bits: 64 OS: Linux OS-release: 3.13.0-113-generic machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: ca_ES.UTF-8 LOCALE: ca_ES.UTF-8 pandas: 0.19.2 nose: 1.3.7 pip: 8.1.2 setuptools: 27.2.0.post20161106 Cython: 0.24.1 numpy: 1.11.1 scipy: 0.18.1 statsmodels: 0.6.1 xarray: None IPython: 5.1.0 sphinx: 1.4.6 patsy: 0.4.1 dateutil: 2.5.3 pytz: 2016.6.1 blosc: None bottleneck: 1.1.0 tables: 3.2.3.1 numexpr: 2.6.1 matplotlib: 1.5.3 openpyxl: 2.3.2 xlrd: 1.0.0 xlwt: 1.1.2 xlsxwriter: 0.9.3 lxml: 3.6.4 bs4: 4.5.1 html5lib: None httplib2: None apiclient: None sqlalchemy: 1.0.13 pymysql: None psycopg2: None jinja2: 2.8 boto: 2.42.0 pandas_datareader: 0.2.1 </details>
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15,761
groupby aggregate function with a dictionary argument mishandles datetime64 columns with TZ info
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3
2017-03-21T06:32:20Z
2017-03-21T09:56:46Z
2017-03-21T09:25:30Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python from datetime import datetime import pandas as pd import pytz tz = pytz.timezone('Asia/Hong_Kong') datetimes = [datetime(2017, 3, 21, 1, 0, 0, 0, tz), datetime(2017, 3, 21, 2, 0, 0, 0, tz), datetime(2017, 3, 21, 3, 0, 0, 0, tz), datetime(2017, 3, 21, 4, 0, 0, 0, tz)] df = pd.DataFrame.from_dict({'groups': ['a', 'a', 'b', 'b'], 'dt': datetimes}) print('Expected output:') print(df.groupby('groups').aggregate('max')) print('Observed output:') print(df.groupby('groups').aggregate({'dt': 'max'})) ``` #### Problem description ![notebook displaying issue](http://i.imgur.com/6njL6mg.png) #### Expected Output `df.groupby('some_column').aggregate({'some_datetime64_column': 'some_aggregate_function'})` and `df.groupby('some_column').aggregate('some_aggregate_function')` should return the same result for `some_datetime64_column` of type `datetime64` with specified timezones #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 3.5.2.final.0 python-bits: 64 OS: Linux OS-release: 3.10.103 machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: None LOCALE: None.None pandas: 0.19.2 nose: 1.3.7 pip: 8.1.2 setuptools: 27.2.0 Cython: 0.25.2 numpy: 1.11.1 scipy: 0.18.1 statsmodels: 0.6.1 xarray: None IPython: 5.3.0 sphinx: 1.4.6 patsy: 0.4.1 dateutil: 2.5.3 pytz: 2016.6.1 blosc: None bottleneck: 1.1.0 tables: 3.2.3.1 numexpr: 2.6.1 matplotlib: 1.5.1 openpyxl: 2.3.2 xlrd: 1.0.0 xlwt: 1.1.2 xlsxwriter: 0.9.3 lxml: 3.6.4 bs4: 4.5.1 html5lib: None httplib2: None apiclient: None sqlalchemy: 1.0.13 pymysql: 0.7.9.None psycopg2: 2.6.2 (dt dec pq3 ext lo64) jinja2: 2.8 boto: 2.42.0 pandas_datareader: 0.2.1 </details>
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different view when index a panel with multiindex
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1
2017-03-21T08:51:41Z
2018-07-06T20:21:16Z
2017-03-21T12:58:37Z
NONE
null
#### Code Sample, a copy-pastable example if possible #### Problem description I find a bug when using panel.apply(), and with some digging, I find an interesting indexing problem caused by multiindex in Panel Object. It is demonstrated below: ```python # import pandas as pd pn1 = pd.Panel(pd.np.random.random(size=(3,4,5)),items=['AAA','BBB','CCC']) print pn1.loc[:,:,1] pn2 = pn1.copy() pn2.major_axis = pd.MultiIndex.from_product([list('AB'),list('ab')]) print pn2.loc[:,:,1] ``` #### Output: ``` AAA BBB CCC 0 0.182982 0.774812 0.894589 1 0.654716 0.695453 0.790078 2 0.340826 0.941283 0.938544 3 0.351851 0.971896 0.362317 A B a b a b AAA 0.182982 0.654716 0.340826 0.351851 BBB 0.774812 0.695453 0.941283 0.971896 CCC 0.894589 0.790078 0.938544 0.362317 ``` With a multiindex as the major_axis of Panel object, the indexing result is transposed. And because of that, when using ``` pn.apply(func, axis=('items','major'))```, it give you the wrong results when the major_axis is a multiindex. Is this a bug? if not, then what is the purpose that it is designed like this? Thanks for help. </details>
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Call save,Prompt list index out of range
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2
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2017-03-22T01:51:55Z
2017-03-21T12:07:56Z
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null
#### Code Sample, a copy-pastable example if possible import openpyxl path = r'C:\Users\hcb\Desktop\test.xlsx' wb = openpyxl.load_workbook(path) wb.save('test.xlsx') #### Problem description Call save,Prompt list index out of range #### Expected Output Traceback (most recent call last): File "D:/python3/test1/myPackge/test2.py", line 4, in <module> wb.save('test.xlsx') File "C:\Python36\lib\site-packages\openpyxl\workbook\workbook.py", line 342, in save save_workbook(self, filename) File "C:\Python36\lib\site-packages\openpyxl\writer\excel.py", line 267, in save_workbook writer.save(filename) File "C:\Python36\lib\site-packages\openpyxl\writer\excel.py", line 248, in save self.write_data() File "C:\Python36\lib\site-packages\openpyxl\writer\excel.py", line 81, in write_data self._write_worksheets() File "C:\Python36\lib\site-packages\openpyxl\writer\excel.py", line 197, in _write_worksheets xml = ws._write() File "C:\Python36\lib\site-packages\openpyxl\worksheet\worksheet.py", line 870, in _write return write_worksheet(self) File "C:\Python36\lib\site-packages\openpyxl\writer\worksheet.py", line 99, in write_worksheet cols = ws.column_dimensions.to_tree() File "C:\Python36\lib\site-packages\openpyxl\worksheet\dimensions.py", line 230, in to_tree obj = col.to_tree() File "C:\Python36\lib\site-packages\openpyxl\worksheet\dimensions.py", line 182, in to_tree attrs = dict(self) File "C:\Python36\lib\site-packages\openpyxl\worksheet\dimensions.py", line 51, in __iter__ value = getattr(self, key, None) File "C:\Python36\lib\site-packages\openpyxl\styles\styleable.py", line 95, in __get__ return coll.names[idx] IndexError: list index out of range <details> </details>
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215,728,925
MDU6SXNzdWUyMTU3Mjg5MjU=
15,764
CLN/INT: rename *possibly* -> *maybe* functions
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4
2017-03-21T12:50:34Z
2017-03-22T11:57:12Z
2017-03-22T11:57:12Z
CONTRIBUTOR
null
we have a mixed bag on naming this. Let's change ``possibly`` -> ``maybe``. Keep everything else the same. (if you do the same search for ``maybe`` you will fine it to be far more common). Note that the *usage* of these functions will have to be renamed as well :> ``` (pandas) bash-3.2$ grep --include '*.py' -R possibly pandas |grep def pandas/computation/expr.py: def _possibly_transform_eq_ne(self, node, left=None, right=None): pandas/computation/expr.py: def _possibly_downcast_constants(self, left, right): pandas/computation/expr.py: def _possibly_eval(self, binop, eval_in_python): pandas/computation/expr.py: def _possibly_evaluate_binop(self, op, op_class, lhs, rhs, pandas/core/internals.py:def _possibly_compare(a, b, op): pandas/indexes/base.py: def _possibly_promote(self, other): pandas/tests/types/test_cast.py: def test_possibly_convert_objects_copy(self): pandas/tseries/index.py: def _possibly_promote(self, other): pandas/tseries/tdi.py: def _possibly_promote(self, other): pandas/types/cast.py:def _possibly_convert_platform(values): pandas/types/cast.py:def _possibly_downcast_to_dtype(result, dtype): pandas/types/cast.py:def _possibly_cast_item(obj, item, dtype): pandas/types/cast.py:def _possibly_convert_objects(values, convert_dates=True, convert_numeric=True, pandas/types/cast.py:def _possibly_castable(arr): pandas/types/cast.py:def _possibly_infer_to_datetimelike(value, convert_dates=False): pandas/types/cast.py:def _possibly_cast_to_datetime(value, dtype, errors='raise'): ```
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215,741,151
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15,765
CLN: replace _interleave_dtype with _find_common_type
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2
2017-03-21T13:35:18Z
2017-03-21T14:53:08Z
2017-03-21T14:50:13Z
CONTRIBUTOR
null
xref #15736 xref #12780
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215,763,564
MDExOlB1bGxSZXF1ZXN0MTExNzk1MDc1
15,766
BUG: various 32bit compat issues
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1
2017-03-21T14:43:53Z
2017-03-21T17:41:58Z
2017-03-21T17:41:03Z
CONTRIBUTOR
null
closes #14866 xref #14183
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215,801,367
MDU6SXNzdWUyMTU4MDEzNjc=
15,767
Proper checks on nrows and chunksize for read_csv
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0
2017-03-21T16:33:14Z
2017-03-22T08:03:51Z
2017-03-22T08:03:32Z
MEMBER
null
From #15755 (e.g. [this comment](https://github.com/pandas-dev/pandas/pull/15756#issuecomment-288108170)). Current status: - there is a check on ``nrows``, which ensure floats are converted to int with no loss of precision, but not that the resulting/passed value is non-negative - there is no check on ``chunksize``, so that a ``pd.concat`` based on ``chunksize=0`` will enter an infinite loop I guess we want to ensure ``chunksize > 0`` and ``nrows >= 0``.
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215,814,352
MDExOlB1bGxSZXF1ZXN0MTExODMyNDQ3
15,768
BUG: Enforce correct encoding in stata
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6
2017-03-21T17:14:27Z
2018-04-22T21:12:04Z
2017-03-21T21:54:22Z
CONTRIBUTOR
null
Ensure StataReader and StataWriter have the correct encoding. Standardized default encoding to 'latin-1' closes #15723 - [x] closes #15723 - [x] tests added / passed - [x] passes ``git diff upstream/master | flake8 --diff`` - [x] whatsnew entry
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15,769
DOC: Ensure basic flake8 diff checks only Python
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1
2017-03-21T17:56:49Z
2017-03-21T18:00:58Z
2017-03-21T18:00:11Z
MEMBER
null
Let's make sure all of the `flake8` commands in our documentation check only Python files (will be applicable to majority of contributions and PR's). Follow-up to #15749
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15,770
Writing custom series to HDF store
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5
2017-03-21T18:14:01Z
2017-03-22T10:28:10Z
2017-03-21T19:09:09Z
NONE
null
How do you write custom objects to an HDF file store? Is there any guidelines for writing custom series to an HDF store? If so where? Thank you Andrew
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CLN/INT: Rename _possibly to _maybe (GH15764)
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6
2017-03-21T19:42:54Z
2017-03-22T12:24:35Z
2017-03-22T11:57:12Z
CONTRIBUTOR
null
Also rename "private" functions in pandas.type.cast - [x] closes #15764 - [x] tests passed - [x] passes ``git diff upstream/master --name-only -- '*.py' | flake8 --diff``
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skipna added to groupby numeric ops
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2017-03-21T20:30:36Z
2021-05-09T15:32:20Z
2017-10-28T00:26:40Z
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null
- [x] closes #15675 - [x] tests added / passed - [ ] passes ``git diff upstream/master --name-only -- '*.py' | flake8 --diff`` - [ ] whatsnew entry
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CLN: relocate lib.ismember* to hashtable space
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1
2017-03-21T20:46:35Z
2017-03-21T23:23:16Z
2017-03-21T23:20:44Z
CONTRIBUTOR
null
- fixes ``.isin`` on 32-bit (hopefully) - perf about 30% better (but this is a small number anyhow) & releases GIL - more generic framework
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BUG: Check that values for "nrows" and "chunksize" are valid
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2017-03-21T22:29:22Z
2017-03-22T08:33:23Z
2017-03-22T08:03:33Z
MEMBER
null
- [x] closes #15767 - [x] tests added / passed - [x] passes ``git diff master --name-only -- '*.py' | flake8 --diff`` - [x] whatsnew entry
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CLN: separate out groupby algos
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1
2017-03-21T22:34:24Z
2017-03-22T12:08:16Z
2017-03-22T12:07:06Z
CONTRIBUTOR
null
- separate out groupby algorithms to separate lib - release GIL on median - release GIL on is_lexsorted / fix memory leak - release GIL on nancorr
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1
2017-03-22T00:33:54Z
2017-03-22T11:54:43Z
2017-03-22T11:53:46Z
CONTRIBUTOR
null
closes #14183
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15,777
Bug: Timestamp removes timezone localization
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7
2017-03-22T05:44:04Z
2017-04-08T21:59:13Z
2017-04-08T21:59:13Z
MEMBER
null
```python In [2]: tz = pd.DatetimeIndex(['2013-01-01 06:00'], tz='US/Pacific').tz In [3]: tz Out[3]: <DstTzInfo 'US/Pacific' LMT-1 day, 16:07:00 STD> In [4]: pd.Timestamp('2013-01-01 06:00', tz=tz).tz Out[4]: <DstTzInfo 'US/Pacific' PST-1 day, 16:00:00 STD> ``` #### Problem description Localization of the timezone should be maintained when creating a Timestamp. I also believe this is the root issue of #13238 since `resample()` calls `groupby()` which (I think) reconstructs the index with Timestamps. ```python In [10]: s = pd.Series(index=pd.DatetimeIndex(['2013-01-01 06:00', '2013-01-01 07:00', '2013-01-02 06:00'], tz='America/Los_Angeles'), data=[1, 2, 3]) In [13]: s.index.tz Out[13]: <DstTzInfo 'America/Los_Angeles' LMT-1 day, 16:07:00 STD> In [14]: s.resample('D').max().index.tz Out[14]: <DstTzInfo 'America/Los_Angeles' PST-1 day, 16:00:00 STD> ``` #### Expected Output ```python <DstTzInfo 'US/Pacific' LMT-1 day, 16:07:00 STD> ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: 92239f5dcfb02f97b5b1eed651895fe70dfd7eb1 python: 2.7.12.final.0 python-bits: 64 OS: Linux OS-release: 4.4.0-45-generic machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: None.None pandas: 0.19.0+644.g92239f5.dirty pytest: 3.0.6 pip: 8.1.2 setuptools: 27.2.0 Cython: 0.24.1 numpy: 1.11.2 scipy: None xarray: None IPython: 5.1.0 sphinx: 1.4.8 patsy: None dateutil: 2.5.3 pytz: 2016.7 blosc: None bottleneck: None tables: None numexpr: None feather: None matplotlib: 1.5.3 openpyxl: None xlrd: None xlwt: None xlsxwriter: None lxml: None bs4: None html5lib: None sqlalchemy: None pymysql: None psycopg2: None jinja2: 2.8 s3fs: None pandas_gbq: None pandas_datareader: None </details>
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MDExOlB1bGxSZXF1ZXN0MTExOTc0MDQ5
15,778
Fix scalar iloc
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12
2017-03-22T10:22:51Z
2017-08-07T22:26:15Z
2017-08-01T22:56:27Z
MEMBER
null
- [x] closes #15686 - [x] tests added / passed - [x] passes ``git diff master --name-only -- '*.py' | flake8 --diff`` - [x] whatsnew entry Unless I'm missing anything, all code for indexers (inside ``pandas/core/indexing.py``) resorts to one of the following for setting values: - if we can work directly on ``BlockManager.setitem`` (simple case, e.g. no multiple dtypes involved), do so - otherwise, rely on methods provided by the object (mainly ``__setitem__``), _which are label based_ This makes it impossible, in the "non-simple case", to index positionally in the correct way with duplicated labels (by the way, it's also plain ugly). I can see three (four) possible solutions: 1. temporarily strip an object from (some of) its labels - what this PR does. Arguably the simplest approach (doesn't require changing objects/``BlockManager`` code), arguably not very elegant (although we could already expect some efficiency gains compared to current master, since this removes some equality checks on labels) 2. add methods to the different objects that do position-based setting. Not trivial as it sounds, I'm afraid - such methods should talk directly the the ``BlockManager``s, hence for instance taking care of dtype changes 3. seriously improving ``BlockManager.setitem`` so that it is able to take care of multiple dtypes. Probably the best approach (would allow to enormously simplify indexing code), and the one requiring most work 4. (completely rewrite all setting code in ``indexing.py`` currently relying on ``self.obj.__setitem__`` so it directly talks to ``BlockManager.setitem``) Notice that ``BlockManager.setitem`` must be fixed in order to fix #12991, but the fix for that bug is significantly simpler than 3. (it is just a matter of shifting indices, not of working with different dtypes). The current PR... works, and does clean a bit the ``_setter`` interface (i.e. concerning the difference between ``iloc`` and ``loc``), which might be a good thing even in case we later decide to drop the less elegant ``InfoCleaner``. My preferred approach would be to apply it, then start working on 3., then come back to the indexing code and simplify it by profiting of 3. But if you prefer to start directly with 2. or 3., I can have a try in that direction. I don't think I'm willing to try 4. because current indexing code is already too complicated.
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15,779
PERF: cythonize groupby-rank
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2
2017-03-22T12:17:55Z
2018-02-10T16:05:52Z
2018-02-10T16:05:52Z
CONTRIBUTOR
null
This dispatches to each group individually. Better to have a combined group_rank to do this. It is a bit of code and ideally would share some with the actual rank algos. ``` In [7]: ngroups = 1000 In [8]: N = 100000 In [9]: np.random.seed(1234) In [10]: df = DataFrame({'key': np.random.randint(0, ngroups, size=N), 'value': np.arange(N)}) In [11]: %timeit df.groupby('key').rank() 1 loop, best of 3: 392 ms per loop # comparision with group_shift_indexer, a transforming operator In [13]: %timeit df.groupby('key').shift() 100 loops, best of 3: 3.15 ms per loop ```
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15,780
travis deduping on prs
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4
2017-03-22T12:52:37Z
2017-03-22T15:38:39Z
2017-03-22T13:58:05Z
CONTRIBUTOR
null
closes #12438
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Return value of boolean datetime fields of NaT: False or NaN ?
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1
2017-03-22T14:29:18Z
2017-03-27T19:22:23Z
2017-03-27T19:22:23Z
MEMBER
null
From discussion in https://github.com/pandas-dev/pandas/pull/15589, the handling of NaT is different for different datetime fields. On a scalar value, `is_leap_year` returns False, the others are not defined: ``` In [1]: pd.Timestamp('NaT').is_month_start --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) <ipython-input-1-654cc4e613aa> in <module>() ----> 1 pd.Timestamp('NaT').is_month_start AttributeError: 'NaTType' object has no attribute 'is_month_start' In [2]: pd.Timestamp('NaT').is_leap_year Out[2]: False ``` On an index (or series `.dt` accessor), `is_leap_year` returns False, the others propagate NaN (with the consequence it is no longer a boolean array/series): ``` In [3]: pd.DatetimeIndex(['2012-01-01', 'NaT']).is_month_start Out[3]: array([ 1., nan]) In [4]: pd.DatetimeIndex(['2012-01-01', 'NaT']).is_leap_year Out[4]: array([ True, False], dtype=bool) ``` So when `is_leap_year` was introduced in #13739, this was done on purpose, citing @sinhrks "pd.NaT.is_leap_year results in False, as I think users want bool array.". This seems indeed the more logical thing to return (certainly for arrays/series), so you can eg use it for indexing. For scalars it is a bit less clear what is the preferable option (return False or NaN), but probably best to be consistent.
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COMPAT: NaT accessors
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3
2017-03-22T14:47:23Z
2017-03-27T19:23:35Z
2017-03-27T19:22:23Z
CONTRIBUTOR
null
closes #15781 PR ``` In [1]: idx = DatetimeIndex(['1/1/2000', None, None, '1/4/2000']) In [2]: idx.is_month_start Out[2]: array([ True, False, False, False], dtype=bool) In [3]: idx.is_leap_year Out[3]: array([ True, False, False, True], dtype=bool) ``` 0.19.2 ``` In [1]: idx = DatetimeIndex(['1/1/2000', None, None, '1/4/2000']) In [3]: idx.is_month_start Out[3]: array([ 1., nan, nan, 0.]) In [2]: idx.is_leap_year Out[2]: array([ True, False, False, True], dtype=bool) ``` mimics ``is_leap_year`` to return a boolean (inlcuding for ``NaT``).
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15,783
CI: remove travis dedupe as enabled auto-cancellation
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0
2017-03-22T19:43:40Z
2017-03-23T19:07:23Z
2017-03-23T19:07:23Z
CONTRIBUTOR
null
xref https://github.com/pandas-dev/pandas/commit/79581ffe6fb73089dfa8394c2f4e44677acfe1ce of course Travis just announced auto-cancellation / it looks good when I enabled it. so removing this :<
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Update testing.py
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1
2017-03-22T21:12:48Z
2017-03-22T21:36:56Z
2017-03-22T21:36:54Z
CONTRIBUTOR
null
Tiny docs typo fix
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15,785
BUG: melt changes type of tz-aware columns
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2017-03-23T13:43:32Z
2018-03-13T10:31:10Z
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NONE
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#### Code Samples ```python import pandas as pd frame = pd.DataFrame({'klass':range(5), 'ts': [pd.Timestamp('2017-03-23 08:22:42.173378+01'), pd.Timestamp('2017-03-23 08:22:42.178578+01'), pd.Timestamp('2017-03-23 08:22:42.173578+01'), pd.Timestamp('2017-03-23 08:22:42.178378+01'), pd.Timestamp('2017-03-23 08:22:42.163378+01')], 'attribute':['att1', 'att2', 'att3', 'att4', 'att5'], 'value': ['a', 'b', 'c', 'd', 'd']}) # At this point, frame.ts is of dtype datetime64[ns, pytz.FixedOffset(60)] frame.set_index(['ts', 'klass'], inplace=True) queried_index = frame.query('value=="d"').index pivoted_frame = frame.reset_index().pivot_table(index=['klass', 'ts'], columns='attribute', values='value', aggfunc='first') melted_frame = pd.melt(pivoted_frame.reset_index(), id_vars=['klass', 'ts'], var_name='attribute', value_name='value') # At this point, melted_frame.ts is of dtype datetime64[ns] queried_after_melted_index = melted_frame.query('value=="d"').set_index(['ts', 'klass']).index frame.loc[queried_index] # Works frame.loc[queried_index] = 'test' # Works frame.loc[queried_after_melted_index] # Works frame.loc[queried_after_melted_index] = 'test' # Breaks ``` The last statement gives: ``` Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python3.5/dist-packages/pandas/core/indexing.py", line 140, in __setitem__ indexer = self._get_setitem_indexer(key) File "/usr/local/lib/python3.5/dist-packages/pandas/core/indexing.py", line 127, in _get_setitem_indexer return self._convert_to_indexer(key, is_setter=True) File "/usr/local/lib/python3.5/dist-packages/pandas/core/indexing.py", line 1230, in _convert_to_indexer raise KeyError('%s not in index' % objarr[mask]) KeyError: "MultiIndex(levels=[[2017-03-23 07:22:42.163378, 2017-03-23 07:22:42.173378, 2017-03-23 07:22:42.173578, 2017-03-23 07:22:42.178378, 2017-03-23 07:22:42.178578], [0, 1, 2, 3, 4]],\n labels=[[3, 0], [3, 4]],\n names=['ts', 'klass']) not in index" ``` #### Problem description - It is counter-intuitive that any operation (which does not explicitly mention in its docs that it does) alters the type of any column. - Also counter-intuitive is that ```frame.loc``` has different behavior in a statement than it has in an assignment. #### Expected Output - ```melted_frame.ts``` and ```frame.ts``` have the same dtype. - ```DataFrame.loc``` fails in both cases, not just in an assignment, or succeeds in both. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 3.5.2.final.0 python-bits: 64 OS: Linux OS-release: 4.4.0-66-generic machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: en_US.UTF-8 pandas: 0.19.2 nose: None pip: 9.0.1 setuptools: 20.7.0 Cython: None numpy: 1.12.0 scipy: None statsmodels: None xarray: None IPython: 5.3.0 sphinx: None patsy: None dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: None tables: None numexpr: None matplotlib: None openpyxl: None xlrd: None xlwt: None xlsxwriter: 0.7.3 lxml: 3.5.0 bs4: 4.4.1 html5lib: 0.999 httplib2: 0.9.1 apiclient: None sqlalchemy: None pymysql: None psycopg2: 2.6.1 (dt dec pq3 ext lo64) jinja2: 2.8 boto: None pandas_datareader: None </details>
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216,453,969
MDU6SXNzdWUyMTY0NTM5Njk=
15,786
Values with the same indexes as x,y from np.array and pd.DataFrame aren't equal.
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1
2017-03-23T14:45:37Z
2017-03-23T15:16:19Z
2017-03-23T15:16:05Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd import numpy as np arr = np.array([[1,2,3],[4,5,6]]) df = pd.DataFrame(arr) ``` #### Problem description the expected output is arr[0][1] equals df[0][1],but the real thing is that two elems aren't equal in value.I have seen the source code,a code line as following ```python #other code value = value.T /#other code ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 2.7.11.final.0 python-bits: 64 OS: Darwin OS-release: 14.5.0 machine: x86_64 processor: i386 byteorder: little LC_ALL: None LANG: zh_CN.UTF-8 LOCALE: None.None pandas: 0.19.2 nose: None pip: 9.0.1 setuptools: 29.0.1 Cython: 0.24 numpy: 1.12.1 scipy: 0.17.0 statsmodels: 0.6.1 xarray: None IPython: 4.1.2 sphinx: None patsy: 0.4.1 dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: None tables: None numexpr: 2.6.1 matplotlib: 1.5.1 openpyxl: None xlrd: None xlwt: None xlsxwriter: None lxml: 3.6.0 bs4: 4.4.1 html5lib: None httplib2: None apiclient: None sqlalchemy: None pymysql: None psycopg2: None jinja2: 2.8 boto: None pandas_datareader: None
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216,477,548
MDU6SXNzdWUyMTY0Nzc1NDg=
15,787
BUG: concat of MultiIndex with names passed
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18
2017-03-23T15:51:42Z
2017-04-10T12:10:24Z
2017-04-10T12:10:24Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import numpy as np import pandas as pd res = [] for _ in range(2): res1 = [] # Only occurs when dataframe is used with measure data = np.zeros((30, 21)) idx = np.random.randint(0, 5, 30) df = pd.DataFrame(data, index=idx).loc[3] #df = pd.DataFrame(data[::5, :]) # Uncomment for example of correct behavior res1.append(pd.DataFrame(sum(data.dot(df.T)))) tmp = pd.concat(res1, keys=[1], names=['level1']) res.append(tmp) final = pd.concat(res, keys=[i for i in range(2)], names=['level2']) print(final) ``` #### Problem description In python, datatypes generally don't matter. A dataframe is a dataframe, but as shown in the example code concat'ing dataframes with an index does not have the same behavior as dataframes without an index. The label for a level of the index is dropped. This is a small bug. Run it several times (10-12 seems to do it) and you will see a much more worrisome issue: on occasion, the label is not dropped. Yes, the output of concat is random. #### Expected Output ``` level2 level1 0 1 0 0.0 1 0.0 2 0.0 3 0.0 4 0.0 5 0.0 1 1 0 0.0 1 0.0 2 0.0 3 0.0 4 0.0 5 0.0 ``` #### Output of ``pd.show_versions()`` ``` level2 0 1 0 0.0 1 0.0 2 0.0 3 0.0 4 0.0 5 0.0 1 1 0 0.0 1 0.0 2 0.0 3 0.0 ````
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216,491,227
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15,788
DataFrame.apply() returns DataFrame unexpectedly when length of list stored in cell matches DF-dimensions
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1
2017-03-23T16:30:19Z
2017-03-23T18:31:04Z
2017-03-23T18:30:49Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd # list length does NOT match DataFrame dimensions, works as expected: df = pd.DataFrame() df['A'] = [[1, 2], [1, 2], [1, 2]] df['B'] = [[3, 4], [3, 4], [3, 4]] df['C'] = [[4, 6], [4, 6], [4, 6]] print(df) # A B C # 0 [1, 2] [3, 4] [4, 6] # 1 [1, 2] [3, 4] [4, 6] # 2 [1, 2] [3, 4] [4, 6] D = df.apply(lambda row: [a+b for a, b in zip(row.A, row.B)], axis=1) print(D) # 0 [4, 6] # 1 [4, 6] # 2 [4, 6] # dtype: object df['D'] = D print(df) # A B C D # 0 [1, 2] [3, 4] [4, 6] [4, 6] # 1 [1, 2] [3, 4] [4, 6] [4, 6] # 2 [1, 2] [3, 4] [4, 6] [4, 6] # list length DOES match DataFrame dimensions, does not work as expected: df = pd.DataFrame() df['A'] = [[1, 2, 3], [1, 2, 3], [1, 2, 3]] df['B'] = [[3, 4, 5], [3, 4, 5], [3, 4, 5]] df['C'] = [[4, 6, 8], [4, 6, 8], [4, 6, 8]] print(df) # A B C # 0 [1, 2, 3] [3, 4, 5] [4, 6, 8] # 1 [1, 2, 3] [3, 4, 5] [4, 6, 8] # 2 [1, 2, 3] [3, 4, 5] [4, 6, 8] # unwanted result: D = df.apply(lambda row: [a+b for a, b in zip(row.A, row.B)], axis=1) print(D) # A B C # 0 4 6 8 # 1 4 6 8 # 2 4 6 8 # correct: df['D'] = [[a+b for a, b in zip(row.A, row.B)] for row in df.itertuples()] print(df) # A B C D # 0 [1, 2, 3] [3, 4, 5] [4, 6, 8] [4, 6, 8] # 1 [1, 2, 3] [3, 4, 5] [4, 6, 8] [4, 6, 8] # 2 [1, 2, 3] [3, 4, 5] [4, 6, 8] [4, 6, 8] ``` #### Problem description This behavior came up in a bigger project, when the length of a stored list incidentally met the DataFrame's dimension and resulted in an exception raised. I didn't expect apply() to return a DataFrame at all. I tried to find a parameter to change this behavior, but didn't have any luck there. May be related to https://github.com/pandas-dev/pandas/issues/5299 #### Expected Output see above #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit: None python: 3.6.0.final.0 python-bits: 64 OS: Linux OS-release: 4.9.11-1-ARCH machine: x86_64 processor: byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: en_US.UTF-8 pandas: 0.19.2 nose: None pip: 9.0.1 setuptools: 34.3.2 Cython: None numpy: 1.12.1 scipy: 0.19.0 statsmodels: 0.8.0 xarray: None IPython: 5.3.0 sphinx: 1.5.3 patsy: 0.4.1 dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: None tables: None numexpr: None matplotlib: 2.0.0 openpyxl: None xlrd: None xlwt: None xlsxwriter: None lxml: None bs4: None html5lib: 0.999999999 httplib2: None apiclient: None sqlalchemy: None pymysql: None psycopg2: 2.7.1 (dt dec pq3 ext lo64) jinja2: 2.9.5 boto: None pandas_datareader: None </details>
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15,789
DOC: .groupby() aligns Series, accepts ndarray
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3
2017-03-23T17:46:49Z
2017-03-23T19:10:45Z
2017-03-23T19:10:25Z
CONTRIBUTOR
null
- [x] closes https://github.com/pandas-dev/pandas/issues/15244 - [ ] tests added / passed - [x] passes ``git diff upstream/master --name-only -- '*.py' | flake8 --diff`` - [ ] whatsnew entry
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216,522,198
MDExOlB1bGxSZXF1ZXN0MTEyMzAzMzU3
15,790
COMPAT: 3.6.1 compat for change in PySlice_GetIndices_Ex
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1
2017-03-23T18:06:49Z
2017-03-23T19:13:08Z
2017-03-23T19:11:33Z
CONTRIBUTOR
null
This doesn't actually matter to any tests except for some internal consistency ones. Bonus is that it eliminates a warning :< note that we aren't actually testing this (yet) on Travis as our 3.6 build uses conda-forge and 3.6.1 is not there as of yet. Its in defaults though (and shows up on appveyor build).
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jupyter notebook kernel crashes when doing groupby, having one row with NaN
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10
2017-03-23T19:57:20Z
2021-05-08T01:34:36Z
2021-05-08T01:34:36Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python df.groupby('City').count()['Bib'].sort_values(ascending=False).head(20) ``` #### Problem description Data set has 26630 rows and one row of df["City"] has a NaN. The jupyter notebook kernel crashes. #### Expected Output A list of the top 20 cities is expected here. df[df['City'].notnull()].groupby('City').count()['Bib'].sort_values(ascending=False).head(20) produces the expected output. https://github.com/rojour/boston_results #### Output of ``pd.show_versions()`` INSTALLED VERSIONS ------------------ commit: None python: 3.5.2.final.0 python-bits: 64 OS: Darwin OS-release: 16.5.0 machine: x86_64 processor: i386 byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: en_US.UTF-8 pandas: 0.19.2 nose: 1.3.7 pip: 9.0.1 setuptools: 27.2.0 Cython: 0.25.2 numpy: 1.11.3 scipy: 0.18.1 statsmodels: 0.6.1 xarray: None IPython: 5.1.0 sphinx: 1.5.1 patsy: 0.4.1 dateutil: 2.6.0 pytz: 2016.10 blosc: None bottleneck: 1.2.0 tables: 3.3.0 numexpr: 2.6.1 matplotlib: 2.0.0 openpyxl: 2.4.1 xlrd: 1.0.0 xlwt: 1.2.0 xlsxwriter: 0.9.6 lxml: 3.7.2 bs4: 4.5.3 html5lib: None httplib2: None apiclient: None sqlalchemy: 1.1.5 pymysql: None psycopg2: None jinja2: 2.9.4 boto: 2.45.0 pandas_datareader: 0.2.1 </details>
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CI: fix coverage file location
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1
2017-03-23T21:18:45Z
2017-03-25T15:57:32Z
2017-03-25T15:56:49Z
CONTRIBUTOR
null
CI: clean up some unused env variables
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CLN/DEPR: html.border option -> display.html.border
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1
2017-03-23T21:27:50Z
2017-07-16T15:32:45Z
2017-07-16T15:32:45Z
CONTRIBUTOR
null
xref #11784 ``` html.border : int A ``border=value`` attribute is inserted in the ``<table>`` tag for the DataFrame HTML repr. [default: 1] [currently: 1] ``` should migrate this (by deprecation) and moving to a new option ``display.html.border`` to keep in-line with our namespacing.
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15,794
Add .nunique method to DataFrame and .groupby
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3
2017-03-23T21:37:03Z
2017-03-24T06:36:34Z
2017-03-23T21:40:21Z
CONTRIBUTOR
null
#### Currently, pd.DataFrame does not have a ``.nunique`` method ``DataFrames`` have various aggregation methods that they share with ``series``, examples being ``.sum``, ``.count`` etc. Likewise with ``DataFrame.groupby``-objects. In many cases, a ``.nunique`` would be useful as on ``DataFrame`` and ``DataFrame.groupby``-objects, for example when you're trying to assess the diversity of data in a DataFrame. #### Expected Output When you're using ``DataFrame.nunique``, with ``n`` columns, you should get back a ``series`` where the index values are the dataframe.columns values, and the series values are the count of unique values, for each column.
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Rolling window endpoints inclusion
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26
2017-03-23T22:29:19Z
2017-04-13T11:39:51Z
2017-04-13T11:39:15Z
CONTRIBUTOR
null
- [x] closes #13965 - [x] time-based window tests added / passed - [x] fixed window tests added / passed - [x] passes ``git diff upstream/master --name-only -- '*.py' | flake8 --diff`` - [x] whatsnew entry
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15,796
ERR: better error message for trying to concat non-pandas objects
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4
2017-03-23T23:03:41Z
2017-10-18T10:27:57Z
2017-10-18T10:27:57Z
CONTRIBUTOR
null
``` In [3]: pd.concat([Series(), 'foo']) TypeError: cannot concatenate a non-NDFrame object ``` trivially ``non-NDFrame`` -> ``non-pandas``. but I think even better would be something like ``` In [4]: objs = [Series(), 'foo'] In [7]: "cannot concatenate [{pandas}] with non-pandas objects of type [{non_pandas}]".format( ...: pandas=','.join(set([str(o.__class__.__name__) for o in objs if isinstance(o, pandas.core.generic.NDFrame)])), ...: non_pandas=','.join(set([str(type(o)) for o in objs if not isinstance(o, pandas.core.generic.NDFrame)]))) Out[7]: "cannot concatenate [Series] with non-pandas objects of type [<class 'str'>]" ```
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BUG/API: degenerate monotonic but not lexsorted MultiIndexes
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1
2017-03-23T23:55:09Z
2017-04-22T02:58:17Z
2017-04-22T02:58:17Z
CONTRIBUTOR
null
after #15694. There are still some degenerate cases where even after ``.sort_index()`` a MI is not lexsorted (nor monotonic). xref https://github.com/pandas-dev/pandas/pull/15694#issuecomment-288894362 We have a bunch of tests which assert this in ``test_multilevel.py`` ``` In [1]: idx = MultiIndex([['A', 'B', 'C'], ['c', 'b', 'a']], ...: [[0,1,2,0,1,2], [0,2,1,1,0,2]]) ...: ...: df = DataFrame({'col': range(len(idx))}, index=idx) ...: In [2]: df Out[2]: col A c 0 B a 1 C b 2 A b 3 B c 4 C a 5 In [3]: df.sort_index() Out[3]: col A b 3 c 0 B a 1 c 4 C a 5 b 2 In [4]: df.sort_index().index.is_lexsorted() Out[4]: False In [5]: df.sort_index().index.is_monotonic Out[5]: True ``` This can be fixed by the diff above. In essence, rather than ``.sort_index()`` *just* computing indexers off of _reconstructed index, we actually _reconnstruct the index on the returned object. But this breaks a few things, namely some tests involving ``.stack()`` as that does ``.sort_index()`` internally. So would need to compensate. (and of course this subtley *changes* the actual returned values, in that they are actually sorted :>)
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MAINT: Enforce string type for where parameter
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2017-03-24T09:05:39Z
2017-03-25T20:49:21Z
2017-03-25T15:59:49Z
MEMBER
null
Deprecated in 0.11.0. xref #12027.
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216,813,122
MDU6SXNzdWUyMTY4MTMxMjI=
15,799
read_csv arguments: can we have skipcols and userows?
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2017-03-24T15:04:59Z
2017-03-27T11:59:25Z
2017-03-27T11:02:44Z
NONE
null
Is there a reason why `read_csv` has a `usecols` and `skiprows` as arguments, but not `skipcols` and `userows`? Is this to avoid parameter checks or something more fundamental than that? It would be nice to have all four options to avoid clunky inversions of the type `usecols = columns.remove(unwanted_col)`.
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15,800
ERR: need a better error message when trying to compare incompat types on merge
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0
2017-03-24T17:23:16Z
2018-02-03T20:30:30Z
2018-02-03T20:30:30Z
CONTRIBUTOR
null
xref https://github.com/pandas-dev/pandas/pull/11410#issuecomment-289083481 These are *both* datetimes, but *not* compatible. ``` In [8]: df = DataFrame({'A':pd.date_range('20130101',periods=3),'B':pd.date_range('20130101',periods=3,tz='US/Eastern')}) In [9]: pd.merge(df, df, left_on='A', right_on='B') TypeError: Argument 'values' has incorrect type (expected numpy.ndarray, got Index) ```
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15,801
TST/BUG: HDFStore.append_to_multiple with dropna=False buggy
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0
2017-03-25T17:13:15Z
2021-05-08T01:36:08Z
null
CONTRIBUTOR
null
xfaile this test: https://github.com/pandas-dev/pandas/pull/15601/commits/4dc2ef8b0af84e60e8ec1dcc070dc9e478defdf8 in ``pandas/tests/io/test_pytables.py`` ``` @pytest.mark.xfail(run=False, reason="append_to_multiple_dropna_false " "is not raising as failed") def test_append_to_multiple_dropna_false(self): df1 = tm.makeTimeDataFrame() df2 = tm.makeTimeDataFrame().rename(columns=lambda x: "%s_2" % x) df1.iloc[1, df1.columns.get_indexer(['A', 'B'])] = np.nan df = concat([df1, df2], axis=1) with ensure_clean_store(self.path) as store: # dropna=False shouldn't synchronize row indexes store.append_to_multiple( {'df1a': ['A', 'B'], 'df2a': None}, df, selector='df1a', dropna=False) with pytest.raises(ValueError): store.select_as_multiple(['df1a', 'df2a']) assert not store.select('df1a').index.equals( store.select('df2a').index) ``` This sometimes succeed and sometimes fails. Needs some investigation.
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217,012,386
MDExOlB1bGxSZXF1ZXN0MTEyNjA2ODg5
15,802
Revert "MAINT: Remove Long and WidePanel (#15748)"
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4
2017-03-25T23:11:14Z
2017-03-26T02:17:11Z
2017-03-26T02:16:32Z
CONTRIBUTOR
null
This reverts commit bff47f2302a0be4dcbf7e5055e525d5652e08fb5. xref #15748 we will have to push this to a later pandas major version as statsmodels not fully compat: https://github.com/statsmodels/statsmodels/issues/3580
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217,013,239
MDExOlB1bGxSZXF1ZXN0MTEyNjA3MzAz
15,803
CI: cleanup / linting
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1
2017-03-25T23:28:34Z
2017-03-26T02:16:47Z
2017-03-26T02:16:11Z
CONTRIBUTOR
null
CI: typo in .travis.yml for print_skipped CI: linted .travis.yml CI: removed CLIPBOARD env variables as not used
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217,018,522
MDExOlB1bGxSZXF1ZXN0MTEyNjA5OTk4
15,804
DOC: Explain differences further for sep parameter
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1
2017-03-26T01:25:12Z
2017-03-26T20:02:53Z
2017-03-26T17:02:46Z
MEMBER
null
Per comment in <a href="https://github.com/pandas-dev/pandas/issues/12686#issuecomment-288843261">#12686</a>. This is the only documentation issue that I found amongst the differences that still exist between the C and Python engines in `parsers.py`
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15,805
MAINT: Remove combineAdd and combineMult
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2017-03-26T01:36:12Z
2017-03-26T20:02:49Z
2017-03-26T16:58:59Z
MEMBER
null
Deprecated in 0.17.0. xref #10735
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15,806
Drop support for NaN categories in Categorical
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2017-03-26T01:48:11Z
2017-03-27T19:16:59Z
2017-03-27T14:47:02Z
MEMBER
null
Deprecated in 0.17.0. xref #10748 xref #13648
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CI: simplify ci setup a bit
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2017-03-26T13:54:43Z
2017-03-27T10:48:44Z
2017-03-26T15:12:20Z
CONTRIBUTOR
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