Python PIP

Created: 2018-01-02 13:22:24 -0800 Modified: 2018-10-28 18:55:41 -0700

Basics

Install pip itself:
- Python 2.x: sudo apt-get install python-pip
- Python 3.x: sudo apt-get install python3-pip
- Either way, enter the Python shell by typing “python” or “python3” accordingly and type help(‘modules’) to see if you have “ensurepip”. If you do, you should have everything installed correctly.
Install with pip: pip install ansible --user
Uninstall with pip: pip uninstall ansible
- Consider uninstalling using “sudo” if you messed up the install and installed as sudo

Background (reference)

This now comes with Python 3.4. I have mine at “C:Python34Scriptspip.exe”.

Installations go to libsite-packages, e.g. C:Python34Libsite-packagesmycli. However, you run them from C:Python34Scripts directly, so when I installed mycli, it ended up as a .exe in Scripts.

Troubleshooting

Python pip install gives “Command ”python setup.py egg_info“ failed with error code 1”

https://stackoverflow.com/questions/35991403/python-pip-install-gives-command-python-setup-py-egg-info-failed-with-error-c

If that doesn’t work, just use easy_install which is right next to pip or maybe elevate and try again.

No module named packaging.version

Here’s an example of the error

adam@debian1:~/.local/lib/python2.7$ pip uninstall

Traceback (most recent call last):

File “/usr/bin/pip”, line 5, in <module>

from pkg_resources import load_entry_point

File “/home/adam/.local/lib/python2.7/site-packages/pkg_resources/init.py”, line 70, in <module>

import packaging.version

ImportError: No module named packaging.version

To fix this, I followed this guidance (reference):

mv ~/.local/lib/python2.7/site-packages/pk_resources ~/.local/lib/python2.7/site-packages/pk_resources_bkp

Then I reran the command.