How to install a Python packages

1) Install a packages from .gz file in python cmd

1) download gz like (Packages.gz) file
2) tar -xzf Packages.gz
3) cd to (Packages) new directoty
4) wirte this command on cmd "python setup.py install"

2) Install a packages from .WHL file in python cmd

C:\Python36\Scripts>pip install D:\Python\pywin32-223-cp37-cp37m-win32.whl

3) Install a packages from  cmd
(Note : if you got error like this "ERROR: Could not install packages due to an EnvironmentError:")

pip --trusted-host files.pythonhosted.org install numpy

4) Install a packages from  cmd

pip install numpy