av with python2

Created by: zoldaten

hi !

Overview

i have successfully built av for python2 from source on Raspbian Stretch armv7l:

python2 -m pip install Cython
git clone https://github.com/PyAV-Org/PyAV
cd PyAV
*fixed in setup.py: added import codecs, from io import open
python2 setup.py build
python2 setup.py install --user

but cant use it:

Python 2.7.16 (default, Oct 10 2019, 22:02:15) 
[GCC 8.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import av
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "av/__init__.py", line 20, in <module>
    from av._core import time_base, library_versions
ImportError: No module named _core

Expected behavior

Actual behavior

Traceback:

{{ Include complete tracebacks if there are any exceptions. }}

Investigation

i fixed import just with export path: export PATH="$PATH:/home/pi/PyAV/build/lib.linux-armv7l-2.7/av" but got this:

Python 2.7.16 (default, Oct 10 2019, 22:02:15) 
[GCC 8.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import av
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/pi/.local/lib/python2.7/site-packages/av-10.0.0-py2.7-linux-armv7l.egg/av/__init__.py", line 23, in <module>
    from av import logging
  File "av/logging.pyx", line 39, in init av.logging
ImportError: cannot import name get_ident

ok. i commented out logging in : "/home/pi/.local/lib/python2.7/site-packages/av-10.0.0-py2.7-linux-armv7l.egg/av/__init__.py"

but crashed finally:

Python 2.7.16 (default, Oct 10 2019, 22:02:15) 
[GCC 8.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import av
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/pi/.local/lib/python2.7/site-packages/av-10.0.0-py2.7-linux-armv7l.egg/av/__init__.py", line 27, in <module>
    from av.audio.fifo import AudioFifo
  File "/home/pi/.local/lib/python2.7/site-packages/av-10.0.0-py2.7-linux-armv7l.egg/av/audio/__init__.py", line 1, in <module>
    from .frame import AudioFrame
  File "av/audio/frame.pyx", line 1, in init av.audio.frame
  File "av/frame.pyx", line 1, in init av.frame
  File "/home/pi/.local/lib/python2.7/site-packages/av-10.0.0-py2.7-linux-armv7l.egg/av/codec/__init__.py", line 1, in <module>
    from .codec import Capabilities, Codec, Properties, codec_descriptor, codecs_available
  File "av/codec/codec.pyx", line 1, in init av.codec.codec
  File "av/descriptor.pyx", line 1, in init av.descriptor
  File "av/option.pyx", line 1, in init av.option
  File "av/enum.pyx", line 13, in init av.enum
ImportError: No module named copyreg

Research

I have done the following:

[V] Checked the PyAV documentation
[ V] Searched on Google
[ V] Searched on Stack Overflow
[ V] Looked through old GitHub issues
Asked on PyAV Gitter
... and waited 72 hours for a response.

Additional context

I know that you do not officially support python2 but if you could help a bit that will be great because otherwise i need to rewrite all packages for dji tello ROS nodes as it uses python2 and av.