Force pip to reinstall all Python packages (works great with https://gist.github.com/stucka/0ced1cc71e1a5c374a18874471636d69)

pipreplace.sh

#!/bin/bash

apt-get install libxml2-dev libssl-dev libffi-dev libxslt1-dev python-dev libjpeg-dev
pip freeze --local >pipfreeze.txt
tr '\n' ' ' < pipfreeze.txt >pipfreeze2.txt
pip install --upgrade --force-reinstall `cat pipfreeze2.txt`

FYI, the tr step isn't necessary.

I think you can just do this:

pip freeze --local >pipfreeze.txt
pip install --upgrade --force-reinstall -r pipfreeze.txt

Thank you, @landonepps's two-liner did the job when I was fighting ipython not launching on OSX High Sierra. There supposedly were dependency problems (despite module being installed) but I noticed that reinstalling troublesome module with pip was fixing the issue. As I had 108 python modules installed in total, these two lines spared me a lot of time. 👍

To avoid reinstalling from corrupted files, one may add the --no-cache-dir option. (Will download all packages again.)

Thank you, @landonepps's two-liner did the job for the error : from robotide import main importerror cannot import name 'main'

Helped me fix a python dependency problem on Mac OS Big Sur after moving from brew's version to pyenv. Thanks!