pip install --ignore-installed PyYAML

Ref:- https://stackoverflow.com/questions/53807511/pip-cannot-uninstall-package-it-is-a-distutils-installed-project

pip install <package>==<version>

For example

pip install pandas==1.5.3

pip install --upgrade --force-reinstall <package>

• https://stackoverflow.com/questions/51913361/difference-between-pip-install-options-ignore-installed-and-force-reinstall - explains the difference between –force-reinstall and –ignore-installed

install a package without using the cache, just for this run.

pip install --no-cache-dir <package>

configure pip to not use the cache “globally” (in all commands)

pip config set global.cache-dir false

remove all wheel files related to matplotlib from pip's cache.

pip cache remove matplotlib

clear all files from pip's cache.

pip cache purge

pip cache directory

pip cache dir

Availability: {'pip cache': 'pip >= 20.1', 'pip config': 'pip >= 10.0', '–no-cache-dir': 'pip >= 6.0'}

Ref:-

• https://stackoverflow.com/a/61762308/6305733 - response from a pip maintainer.

python -m pip install --upgrade pip

• https://caremad.io/posts/2013/07/setup-vs-requirement/ - setup.py vs requirements.txt - an article by Donald Stufft
  • Easy to understand, well written.
  • found it in https://pip.pypa.io/en/stable/user_guide/#requirements-files
• Changes to the pip dependency resolver in 20.3 - https://pip.pypa.io/en/stable/user_guide/#changes-to-the-pip-dependency-resolver-in-20-3-2020
• https://pip.pypa.io/en/stable/news/ - pip changelog