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13,411,544 | Delete column from pandas DataFrame | delete a column `column_name` without having to reassign from pandas data frame `df` | df.drop('column_name', axis=1, inplace=True) |
10,750,802 | Disable abbreviation in argparse | disable abbreviation in argparse | parser = argparse.ArgumentParser(allow_abbrev=False) |
35,711,059 | Extract dictionary value from column in data frame | extract dictionary values by key 'Feature3' from data frame `df` | feature3 = [d.get('Feature3') for d in df.dic] |
14,734,533 | How to access pandas groupby dataframe by key | get data of column 'A' and column 'B' in dataframe `df` where column 'A' is equal to 'foo' | df.loc[gb.groups['foo'], ('A', 'B')] |
517,355 | String formatting in Python | print '[1, 2, 3]' | print('[%s, %s, %s]' % (1, 2, 3)) |
517,355 | String formatting in Python | Display `1 2 3` as a list of string | print('[{0}, {1}, {2}]'.format(1, 2, 3)) |
17,106,819 | Accessing Python dict values with the key start characters | get values from a dictionary `my_dict` whose key contains the string `Date` | [v for k, v in list(my_dict.items()) if 'Date' in k] |
18,724,607 | Python date string formatting | null | """{0.month}/{0.day}/{0.year}""".format(my_date) |
22,397,058 | Dropping a single (sub-) column from a MultiIndex | drop a single subcolumn 'a' in column 'col1' from a dataframe `df` | df.drop(('col1', 'a'), axis=1) |
22,397,058 | Dropping a single (sub-) column from a MultiIndex | dropping all columns named 'a' from a multiindex 'df', across all level. | df.drop('a', level=1, axis=1) |
19,121,722 | Build Dictionary in Python Loop - List and Dictionary Comprehensions | build dictionary with keys of dictionary `_container` as keys and values of returned value of function `_value` with correlating key as parameter | {_key: _value(_key) for _key in _container} |
34,527,388 | How to click on the text button using selenium python | click on the text button 'section-select-all' using selenium python | browser.find_element_by_class_name('section-select-all').click() |
17,604,837 | Python - Combine two dictionaries, concatenate string values? | combine two dictionaries `d ` and `d1`, concatenate string values with identical `keys` | dict((k, d.get(k, '') + d1.get(k, '')) for k in keys) |
16,735,786 | How to generate unique equal hash for equal dictionaries? | generate unique equal hash for equal dictionaries `a` and `b` | hash(pformat(a)) == hash(pformat(b)) |
18,938,276 | How to convert nested list of lists into a list of tuples in python 3.3? | convert nested list of lists `[['tom', 'cat'], ['jerry', 'mouse'], ['spark', 'dog']]` into a list of tuples | list(map(tuple, [['tom', 'cat'], ['jerry', 'mouse'], ['spark', 'dog']])) |
17,166,601 | Summing across rows of Pandas Dataframe | sum the column `positions` along the other columns `stock`, `same1`, `same2` in a pandas data frame `df` | df.groupby(['stock', 'same1', 'same2'], as_index=False)['positions'].sum() |
17,166,601 | Summing across rows of Pandas Dataframe | null | df.groupby(['stock', 'same1', 'same2'])['positions'].sum().reset_index() |
9,257,094 | change a string into uppercase | change string `s` to upper case | s.upper() |
186,857 | Splitting a semicolon-separated string to a dictionary, in Python | split a string `s` by ';' and convert to a dictionary | dict(item.split('=') for item in s.split(';')) |
15,459,217 | how to set cookie in python mechanize | Add header `('Cookie', 'cookiename=cookie value')` to mechanize browser `br` | br.addheaders = [('Cookie', 'cookiename=cookie value')] |
38,147,447 | How to remove square bracket from pandas dataframe | set data in column 'value' of dataframe `df` equal to first element of each list | df['value'] = df['value'].str[0] |
38,147,447 | How to remove square bracket from pandas dataframe | get element at index 0 of each list in column 'value' of dataframe `df` | df['value'] = df['value'].str.get(0) |
38,147,447 | How to remove square bracket from pandas dataframe | remove square bracket '[]' from pandas dataframe `df` column 'value' | df['value'] = df['value'].str.strip('[]') |
17,462,994 | Python getting a string (key + value) from Python Dictionary | Get a string with string formatting from dictionary `d` | """, """.join(['{}_{}'.format(k, v) for k, v in d.items()]) |
15,465,204 | Easier way to add multiple list items? | Sum of sums of each list, in a list of lists named 'lists'. | sum(sum(x) for x in lists) |
14,766,194 | testing whether a Numpy array contains a given row | Check whether a numpy array `a` contains a given row `[1, 2]` | any(np.equal(a, [1, 2]).all(1)) |
22,240,602 | How do I check if all elements in a list are the same? | check if all elements in list `mylist` are the same | len(set(mylist)) == 1 |
21,205,074 | How to split a string at line breaks in python? | split a string `s` at line breaks `\r\n` | [map(int, x.split('\t')) for x in s.rstrip().split('\r\n')] |
20,230,211 | Create a hierarchy from a dictionary of lists | sort a dictionary `a` by values that are list type | t = sorted(list(a.items()), key=lambda x: x[1]) |
4,940,032 | Search for string in txt file | Search for string 'blabla' in txt file 'example.txt' | if ('blabla' in open('example.txt').read()):
pass |
4,940,032 | Search for string in txt file | Search for string 'blabla' in txt file 'example.txt' | f = open('example.txt')
s = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
if (s.find('blabla') != (-1)):
pass |
4,940,032 | Search for string in txt file | Search for string `blabla` in txt file 'example.txt' | datafile = file('example.txt')
found = False
for line in datafile:
if (blabla in line):
return True
return False |
14,431,731 | Replacing the empty strings in a string | insert string `string1` after each character of `string2` | string2.replace('', string1)[len(string1):-len(string1)] |
5,106,228 | getting every possible combination in a list | getting every possible combination of two elements in a list | list(itertools.combinations([1, 2, 3, 4, 5, 6], 2)) |
15,390,374 | Python 3: How do I get a string literal representation of a byte string? | get a utf-8 string literal representation of byte string `x` | """x = {}""".format(x.decode('utf8')).encode('utf8') |
3,501,382 | Checking whether a variable is an integer | check if `x` is an integer | isinstance(x, int) |
3,501,382 | Checking whether a variable is an integer | check if `x` is an integer | (type(x) == int) |
307,305 | Play a Sound with Python | play the wav file 'sound.wav' | winsound.PlaySound('sound.wav', winsound.SND_FILENAME) |
4,152,376 | How to get the n next values of a generator in a list (python) | create a list containing the `n` next values of generator `it` | [next(it) for _ in range(n)] |
4,152,376 | How to get the n next values of a generator in a list (python) | get list of n next values of a generator `it` | list(itertools.islice(it, 0, n, 1)) |
1,388,818 | How can I compare two lists in python and return matches | compare two lists in python `a` and `b` and return matches | set(a).intersection(b) |
1,388,818 | How can I compare two lists in python and return matches | null | [i for i, j in zip(a, b) if i == j] |
17,757,450 | How to print a list with integers without the brackets, commas and no quotes? | convert list `data` into a string of its elements | print(''.join(map(str, data))) |
3,166,619 | python regex: match a string with only one instance of a character | match regex pattern '\\$[0-9]+[^\\$]*$' on string '$1 off delicious $5 ham.' | re.match('\\$[0-9]+[^\\$]*$', '$1 off delicious $5 ham.') |
10,675,054 | How to import a module in Python with importlib.import_module | import a nested module `c.py` within `b` within `a` with importlib | importlib.import_module('.c', 'a.b') |
10,675,054 | How to import a module in Python with importlib.import_module | import a module 'a.b.c' with importlib.import_module in python 2 | importlib.import_module('a.b.c') |
7,717,380 | how to convert 2d list to 2d numpy array? | Convert array `a` to numpy array | a = np.array(a) |
13,794,532 | Python regular expression for Beautiful Soup | Find all `div` tags whose classes has the value `comment-` in a beautiful soup object `soup` | soup.find_all('div', class_=re.compile('comment-')) |
23,612,271 | A sequence of empty lists of length n in Python? | a sequence of empty lists of length `n` | [[] for _ in range(n)] |
9,495,262 | create dictionary from list of variables | create dictionary from list of variables 'foo' and 'bar' already defined | dict((k, globals()[k]) for k in ('foo', 'bar')) |
1,731,346 | How to get two random records with Django | get two random records from model 'MyModel' in Django | MyModel.objects.order_by('?')[:2] |
29,035,168 | How to use a dot in Python format strings? | Print a dictionary `{'user': {'name': 'Markus'}}` with string formatting | """Hello {user[name]}""".format(**{'user': {'name': 'Markus'}}) |
20,059,427 | Python: using a dict to speed sorting of a list of tuples | create a dictionary `list_dict` containing each tuple in list `tuple_list` as values and the tuple's first element as the corresponding key | list_dict = {t[0]: t for t in tuple_list} |
3,996,904 | Generate random integers between 0 and 9 | Generate a random integer between 0 and 9 | randint(0, 9) |
3,996,904 | Generate random integers between 0 and 9 | Generate a random integer between `a` and `b` | random.randint(a, b) |
3,996,904 | Generate random integers between 0 and 9 | Generate random integers between 0 and 9 | print((random.randint(0, 9))) |
5,864,271 | Reverse a string in Python two characters at a time (Network byte order) | reverse a string `a` by 2 characters at a time | """""".join(reversed([a[i:i + 2] for i in range(0, len(a), 2)])) |
28,664,103 | How to transform a time series pandas dataframe using the index attributes? | transform time series `df` into a pivot table aggregated by column 'Close' using column `df.index.date` as index and values of column `df.index.time` as columns | pd.pivot_table(df, index=df.index.date, columns=df.index.time, values='Close') |
10,666,163 | How to check if all elements of a list matches a condition? | check if the third element of all the lists in a list "items" is equal to zero. | any(item[2] == 0 for item in items) |
10,666,163 | How to check if all elements of a list matches a condition? | Find all the lists from a lists of list 'items' if third element in all sub-lists is '0' | [x for x in items if x[2] == 0] |
16,412,563 | Python: sorting dictionary of dictionaries | sort dictionary of dictionaries `dic` according to the key 'Fisher' | sorted(list(dic.items()), key=lambda x: x[1]['Fisher'], reverse=True) |
17,952,279 | Logarithmic y-axis bins in python | plot a data logarithmically in y axis | plt.yscale('log', nonposy='clip') |
10,365,225 | extract digits in a simple way from a python string | null | map(int, re.findall('\\d+', s)) |
2,759,323 | How can I list the contents of a directory in Python? | list the contents of a directory '/home/username/www/' | os.listdir('/home/username/www/') |
2,759,323 | How can I list the contents of a directory in Python? | list all the contents of the directory 'path'. | os.listdir('path') |
40,076,861 | How to merge two DataFrames into single matching the column values | merge a pandas data frame `distancesDF` and column `dates` in pandas data frame `datesDF` into single | pd.concat([distancesDF, datesDF.dates], axis=1) |
30,062,429 | Python How to get every first element in 2 Dimensional List | get value of first index of each element in list `a` | [x[0] for x in a] |
30,062,429 | Python How to get every first element in 2 Dimensional List | python how to get every first element in 2 dimensional list `a` | [i[0] for i in a] |
5,075,247 | Regular expression to remove line breaks | remove line breaks from string `textblock` using regex | re.sub('(?<=[a-z])\\r?\\n', ' ', textblock) |
1,883,604 | Reading utf-8 characters from a gzip file in python | Open gzip-compressed file encoded as utf-8 'file.gz' in text mode | gzip.open('file.gz', 'rt', encoding='utf-8') |
6,159,313 | Can Python test the membership of multiple values in a list? | test if either of strings `a` or `b` are members of the set of strings, `['b', 'a', 'foo', 'bar']` | set(['a', 'b']).issubset(['b', 'a', 'foo', 'bar']) |
6,159,313 | Can Python test the membership of multiple values in a list? | Check if all the values in a list `['a', 'b']` are present in another list `['b', 'a', 'foo', 'bar']` | all(x in ['b', 'a', 'foo', 'bar'] for x in ['a', 'b']) |
3,939,361 | Remove specific characters from a string | Remove characters "!@#$" from a string `line` | line.translate(None, '!@#$') |
3,939,361 | Remove specific characters from a string | Remove characters "!@#$" from a string `line` | line = re.sub('[!@#$]', '', line) |
3,939,361 | Remove specific characters from a string | Remove string "1" from string `string` | string.replace('1', '') |
3,939,361 | Remove specific characters from a string | Remove character `char` from a string `a` | a = a.replace(char, '') |
3,939,361 | Remove specific characters from a string | Remove characters in `b` from a string `a` | a = a.replace(char, '') |
3,939,361 | Remove specific characters from a string | Remove characters in '!@#$' from a string `line` | line = line.translate(string.maketrans('', ''), '!@#$') |
38,704,545 | How to binarize the values in a pandas DataFrame? | binarize the values in columns of list `order` in a pandas data frame | pd.concat([df, pd.get_dummies(df, '', '').astype(int)], axis=1)[order] |
19,672,101 | Storing a collection of integers in a list | store integer 3, 4, 1 and 2 in a list | [3, 4, 1, 2] |
13,627,865 | Is it possible to define global variables in a function in Python | define global variable `something` with value `bob` | globals()['something'] = 'bob' |
199,059 | I'm looking for a pythonic way to insert a space before capital letters | insert spaces before capital letters in string `text` | re.sub('([a-z](?=[A-Z])|[A-Z](?=[A-Z][a-z]))', '\\1 ', text) |
727,507 | How can I convert Unicode to uppercase to print it? | print unicode string `ex\xe1mple` in uppercase | print('ex\xe1mple'.upper()) |
28,657,018 | Remove string from list if from substring list | get last element of string splitted by '\\' from list of strings `list_dirs` | [l.split('\\')[-1] for l in list_dirs] |
579,856 | What's the Pythonic way to combine two sequences into a dictionary? | combine two sequences into a dictionary | dict(zip(keys, values)) |
3,220,284 | How to Customize the time format for Python logging? | customize the time format in python logging | formatter = logging.Formatter('%(asctime)s;%(levelname)s;%(message)s') |
8,172,861 | Python Regex replace | Replace comma with dot in a string `original_string` using regex | new_string = re.sub('"(\\d+),(\\d+)"', '\\1.\\2', original_string) |
5,826,427 | Can a python script execute a function inside a bash script? | call a function `otherfunc` inside a bash script `test.sh` using subprocess | subprocess.call('test.sh otherfunc') |
5,826,427 | Can a python script execute a function inside a bash script? | null | subprocess.Popen(['bash', '-c', '. foo.sh; go']) |
1,546,226 | A simple way to remove multiple spaces in a string in Python | remove multiple spaces in a string `foo` | """ """.join(foo.split()) |
13,557,937 | How to convert decimal to binary list in python | convert decimal 8 to a list of its binary values | list('{0:0b}'.format(8)) |
13,557,937 | How to convert decimal to binary list in python | convert decimal integer 8 to a list of its binary values as elements | [int(x) for x in list('{0:0b}'.format(8))] |
13,557,937 | How to convert decimal to binary list in python | convert decimal `8` to binary list | [int(x) for x in bin(8)[2:]] |
9,932,549 | Is it possible to take an ordered "slice" of a dictionary in Python based on a list of keys? | get key-value pairs in dictionary `my_dictionary` for all keys in list `my_list` in the order they appear in `my_list` | dict(zip(my_list, map(my_dictionary.get, my_list))) |
11,144,513 | Numpy: cartesian product of x and y array points into single array of 2D points | cartesian product of `x` and `y` array points into single array of 2d points | numpy.dstack(numpy.meshgrid(x, y)).reshape(-1, 2) |
16,739,319 | Selenium Webdriver - NoSuchElementExceptions | selenium wait for driver `driver` 60 seconds before throwing a NoSuchElementExceptions exception | driver.implicitly_wait(60) |
16,739,319 | Selenium Webdriver - NoSuchElementExceptions | selenium webdriver switch to frame 'frameName' | driver.switch_to_frame('frameName') |
21,618,351 | Format time string in Python 3.3 | format current date to pattern '{%Y-%m-%d %H:%M:%S}' | time.strftime('{%Y-%m-%d %H:%M:%S}') |
17,713,873 | How do I sort a Python list of time values? | sort list `['14:10:01', '03:12:08']` | sorted(['14:10:01', '03:12:08']) |
20,778,951 | Regex for location matching - Python | find all occurrences of regex pattern '(?:\\w+(?:\\s+\\w+)*,\\s)+(?:\\w+(?:\\s\\w+)*)' in string `x` | re.findall('(?:\\w+(?:\\s+\\w+)*,\\s)+(?:\\w+(?:\\s\\w+)*)', x) |
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