Answers for "how to clear packages in python"

pip remove

# python2
pip uninstall package_name
# python3
pip3 uninstall package_name

how to delete all pips

type "pip freeze" to get list of all installed packages.
Copy all the names into a text file name it pkg.txt
then type the following "pip uninstall -r pkg.txt"
you will be asked to proceed type "y" and enter