pip is not recognized in cmd 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: add pip to path

import os
import sys
pipPath = f'{os.path.dirname(sys.executable)}\\Scripts'
os.system(f'setx PATH "%PATH%;{pipPath}"')

Example 3: pip is not a batch command but python is installed

python -m pip install [packagename]

Example 4: '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)