$ curl cheat.sh/
# pip3
# Python package manager.
# More information: <https://pip.pypa.io>.

# Find available packages:
pip3 search package_name

# Install a package:
pip3 install package_name

# Install a specific version of a package:
pip3 install package_name==package_version

# Upgrade a package:
pip3 install --upgrade package_name

# Uninstall a package:
pip3 uninstall package_name

# Save the list of installed packages to a file:
pip3 freeze > requirements.txt

# Install packages from a file:
pip3 install --requirement requirements.txt

# Show installed package info:
pip3 show package_name

$
Follow @igor_chubin cheat.sh tldr