Pylint and sanity_check

[bhack]

This is a github Action to support and test tensorflow/tensorflow#48294 and our Gitter thread with /cc @perfinion @angerson. It has two job flat pylint and ci_sanity.sh in tensorflow/tensorflow:devel.

As you can see from the Action log pylint behavior is different if we let it to explore the module itself or if we push a list of python files with find as in our ci_sanity.sh approach.

See also:
https://stackoverflow.com/questions/36873096/run-pylint-for-all-python-files-in-a-directory-and-all-subdirectories
https://pylint.readthedocs.io/en/latest/user_guide/run.html

[angerson]

What's the end goal for this PR? It doesn't seem useful for this repo.

[bhack]

The goal of this PR is not to be merged but fast iterate using the Action and understand how we want to execute pylint on the developer machine having the same results as Ubuntu Sanity VM where I have no visibility.

[bhack]

/cc @Pierre-Sassoulas Any hint about error differences between passing a file list to pylint vs pylint exploring the module (see Action result diff)?

[Pierre-Sassoulas]

I did not check everything but pylint need __init__.py to analyse a module, a directory without one won't be analysed. But a file given directly to pylint in such a directory will.

[bhack]

@Pierre-Sassoulas I think I've found the issue. With wildcard import :

from tensorflow.python.ops.control_flow_ops import *

The pylint: disable=redefined-builtin in the imported control_flow_ops file is ignored and you got W0622.

If you direct import

from tensorflow.python.ops import control_flow_ops

the pylint: disable=redefined-builtin in contro_flow_ops it seems respected.

[bhack]

@angerson Can you let run the Action?

[bhack]

Now ci_sanity.py pass. Can we align Ubuntu Sanity VM with the right python/numpy version?

[bhack]

Can you re-run this Action?

[Pierre-Sassoulas]

You can close and reopen to launch the check again

[bhack]

I don't think that we have this policy but I will try.