The pip list command will display the packages that have been installed using pip. In this example, pip will attempt to install packages into Python version 3.9.6.

~]$ pip list -v
Package      Version Location                                               Installer
------------ ------- ------------------------------------------------------ ---------
bcrypt       4.0.1   /usr/local/bin/python3.9.6/lib/python3.9/site-packages pip
cffi         1.16.0  /usr/local/bin/python3.9.6/lib/python3.9/site-packages pip
cryptography 41.0.5  /usr/local/bin/python3.9.6/lib/python3.9/site-packages pip
paramiko     3.3.1   /usr/local/bin/python3.9.6/lib/python3.9/site-packages pip
pip          21.1.3  /usr/local/bin/python3.9.6/lib/python3.9/site-packages pip
pycparser    2.21    /usr/local/bin/python3.9.6/lib/python3.9/site-packages pip
PyNaCl       1.5.0   /usr/local/bin/python3.9.6/lib/python3.9/site-packages pip
setuptools   56.0.0  /usr/local/bin/python3.9.6/lib/python3.9/site-packages pip

The pip install command can be used to install a package.

]$ pip install jsonpatch
Defaulting to user installation because normal site-packages is not writeable
Collecting jsonpatch
  Downloading jsonpatch-1.32-py2.py3-none-any.whl (12 kB)
Collecting jsonpointer>=1.9
  Downloading jsonpointer-2.3-py2.py3-none-any.whl (7.8 kB)
Installing collected packages: jsonpointer, jsonpatch
Successfully installed jsonpatch-1.32 jsonpointer-2.3

Or, you can list the packages that you want installed in a file, typically named requirements.txt.

jsonpatch==1.32

And then use the pip install command with the -r or --requirement option.

pip install --requirement requirement.txt

The following can be used if you want to install a package in a specific version of Python.

/usr/bin/python3.6 -m pip install paramiko

And here is how you could install a module from GitHub. Check out my article Python (Scripting) - Creating your own module in GitHub.

~]$ pip install git+ssh://git@github.com/JohnDoe/modules.git#egg=greeting
Collecting my_pip_package
  Cloning ssh://****@github.com/JohnDoe/modules.git to /tmp/pip-install-i90pj1zy/greeting_c45c7fff3cc64315b04864072b6c0470
  Running command git clone -q 'ssh://****@github.com/JohnDoe/modules.git' /tmp/pip-install-i90pj1zy/greeting_c45c7fff3cc64315b04864072b6c0470
Using legacy 'setup.py install' for greeting, since package 'wheel' is not installed.
Installing collected packages: greeting
    Running setup.py install for greeting ... done
Successfully installed greeting-0.0.1

When you install a package using pip, one or more files and directories get installed to the site-packages folder. For example, if you install paramiko in Python version 3.9.6 using pip then there should be one or more paramiko files and directories in the Python 3.9.6 site-packages directory.

/usr/local/bin/python3.9.6/lib/python3.9/site-packages/paramiko