[email protected]:~$ Cryptography package 
Cryptography: command not found
[email protected]:~$ pip install wheel
Collecting wheel
  Downloading https://files.pythonhosted.org/packages/65/63/39d04c74222770ed1589c0eaba06c05891801219272420b40311cd60c880/wheel-0.36.2-py2.py3-none-any.whl
Installing collected packages: wheel
Successfully installed wheel-0.29.0
You are using pip version 8.1.1, however version 21.1.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
[email protected]:~$ pip install --upgrade pip
Collecting pip
  Downloading https://files.pythonhosted.org/packages/b1/44/6e26d5296b83c6aac166e48470d57a00d3ed1f642e89adc4a4e412a01643/pip-21.1.2.tar.gz (1.6MB)
    100% |████████████████████████████████| 1.6MB 219kB/s 
Building wheels for collected packages: pip
  Running setup.py bdist_wheel for pip ... done
  Stored in directory: /home/m/.cache/pip/wheels/a6/7e/f9/505021bc4b0f4f6186064b0bbe5be85a52adfde8d4ed99739a
Successfully built pip
Installing collected packages: pip
Successfully installed pip-21.1.2