what to do if 'pip' is not recognized as an internal or external command code example

Example 1: 'pip' is not recognized as an internal or external command, operable program or batch file.

py -m pip install [packagename]

Example 2: 'pip' is not recognized as an internal or external command, operable program or batch file.

$ python -m pip --version
pip X.Y.Z from .../site-packages/pip (python X.Y)