ohmyzsh/plugins/pip/README.md

pip plugin

This plugin adds completion for pip,
the Python package manager.

To use it, add pip to the plugins array in your zshrc file:

plugins=(... pip)

pip cache

The pip plugin caches the names of available pip packages from the PyPI index.
To trigger the caching process, try to complete pip install,
or you can run zsh-pip-cache-packages directly.

To reset the cache, run zsh-pip-clear-cache and it will be rebuilt next
the next time you autocomplete pip install.