Flask app on Cloud Foundry - Command “python setup.py egg_info” failed with error code 1

[pruthvishetty]

I am trying to push a Python (3.6.5) app via Flask to Cloud Foundry (cf version 6.36.1+e3799ad7e.2018-04-04). The application takes a POST request (text file), does some text transformation, saves the new file, and returns a confirmation message. It works locally (tested via Postman). However, when attempting to push it to CF, it gives the following error -

Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-ygzuah5g/logging/

Could you please let me know how I can go about solving this issue? Thanks in advance. The entire files together are ~ 350 MB. I am using a manifest.yml

```
applications:
- name: textsum
  memory: 512M
  command: python server.py
  buildpack: https://github.com/cloudfoundry/buildpack-python.git```

PS - Not sure if this is helpful/relevant, I do have import queue in one of my files. If I change it to import Queue (Py 2x compatible) and use Py 2.7.15 runtime, the cf push is successful, but it throws runtime errors

    File "/home/vcap/deps/0/python/lib/python2.7/subprocess.py", line 1047, in _execute_child
    ERR   raise child_exception
    ERR OSError: [Errno 2] No such file or directory
    ERR 10.0.65.11 - - [12/Jun/2018 20:56:16] "POST / HTTP/1.1" 500 -```

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this:

https://www.pivotaltracker.com/story/show/158309269

The labels on this github issue will be updated when the story is started.

[pruthvishetty]

The issue was due to importing a third party library called logging into the Python 3 environment, which is hiding the standard library version. It is, by default, there in Python 3 environment. No need to import it via requirements.