Traceback (most recent call last):


 "<ipython-input-15-8ab0723181fb>", line 1, in <module>

df1.append(df2)


 "/home/andre/miniconda3/envs/pandas-dev/lib/python3.6/site-packages/pandas/core/frame.py", line 6211, in append

sort=sort)


 "/home/andre/miniconda3/envs/pandas-dev/lib/python3.6/site-packages/pandas/core/reshape/concat.py", line 226, in concat

return op.get_result()


 "/home/andre/miniconda3/envs/pandas-dev/lib/python3.6/site-packages/pandas/core/reshape/concat.py", line 423, in get_result

copy=self.copy)


 "/home/andre/miniconda3/envs/pandas-dev/lib/python3.6/site-packages/pandas/core/internals.py", line 5416, in concatenate_block_managers

elif is_uniform_join_units(join_units):


 "/home/andre/miniconda3/envs/pandas-dev/lib/python3.6/site-packages/pandas/core/internals.py", line 5440, in is_uniform_join_units

all(not ju.is_na or ju.block.is_extension for ju in join_units) and


 "/home/andre/miniconda3/envs/pandas-dev/lib/python3.6/site-packages/pandas/core/internals.py", line 5440, in <genexpr>

all(not ju.is_na or ju.block.is_extension for ju in join_units) and
AttributeError: 'NoneType' object has no attribute 'is_extension'


Traceback (most recent call last):


 "<string>", line 1, in <module>


 "C:\Users\****\AppData\Local\Temp\pip-build-3eutnrat\distribute\setuptools\__init__.py", line 2, in <module>

from setuptools.extension import Extension, Library


 "C:\Users\****\AppData\Local\Temp\pip-build-3eutnrat\distribute\setuptools\extension.py", line 5, in <module>

from setuptools.dist import _get_unpatched


 "C:\Users\****\AppData\Local\Temp\pip-build-3eutnrat\distribute\setuptools\dist.py", line 7, in <module>

from setuptools.command.install import install


 "C:\Users\****\AppData\Local\Temp\pip-build-3eutnrat\distribute\setuptools\command\__init__.py", line 8, in <module>

from setuptools.command import install_scripts


 "C:\Users\****\AppData\Local\Temp\pip-build-3eutnrat\distribute\setuptools\command\install_scripts.py", line 3, in <module>

from pkg_resources import Distribution, PathMetadata, ensure_directory


 "C:\Users\****\AppData\Local\Temp\pip-build-3eutnrat\distribute\pkg_resources.py", line 1518, in <module>

register_loader_type(importlib_bootstrap.Source
Loader, DefaultProvider)

AttributeError: module 'importlib._bootstrap' has no attribute 'Source
Loader'
