Pip does not work after upgrade to ubuntu-16.10

Question

Running a command alongwith pip gives the following error. Even the command pip -V produces the following error.
I read that the error is due to setuptoo

Answer 1

Upgrade your setuptools: wget https://bootstrap.pypa.io/ez_setup.py -O - | sudo python3

Generally sudo combined with pip is considered harmful, avoid this when your system is not already broken.

Answer 2

The only solution I could find is reinstalling pip. Run these commands on your terminal

• wget https://bootstrap.pypa.io/get-pip.py
• sudo -H python get-pip.py --prefix=/usr/local/

However, this works only for pip, not pip3!

Answer 3

Please refer to https://stackoverflow.com/a/48126778/7596504. The problem could be fixed by modifying your /usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py.