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If you don't use python's virtual env on your machine, you will need to use pip3 for python3 instead of pip.
List installed packages
$ pip list
Package Version
------------------ ---------
appnope 0.1.0
argon2-cffi 20.1.0
attrs 19.3.0
backcall 0.2.0
bleach 3.1.5
certifi 2020.6.20
cffi 1.14.1
chardet 3.0.4
decorator 4.4.2
# Of course, you can use grep with |
$ pip list | grep six
six 1.15.0
Output installed packages in requirements format
When you publish your python project to GitHub, publishing requirements.txt could be good since others can try your project without having module errors.
$ pip freeze
$ pip freeze > requirements.txt
Show details of a package
$ pip show package_name
$ pip show six
Name: six
Version: 1.15.0
Summary: Python 2 and 3 compatibility utilities
Home-page: https://github.com/benjaminp/six
Author: Benjamin Peterson
Author-email: benjamin@python.org
License: MIT
Location: /usr/local/lib/python3.8/site-packages
Requires:
Required-by: traitlets, python-dateutil, pyrsistent, packaging, jsonschema, bleach, argon2-cffi
Install a package
$ pip install package_name
Install a specific version
$ pip install tensorflow==1.14.0
Update a package
$ pip install -U package_name
Uninstall a package
$ pip uninstall -y package_name
Install multiple packages
$ pip install package_name1 package_name2
Install packages by requirements.txt
$ pip install -r requirements.txt
Uninstall multiple packages
$ pip uninstall -y package_name1 package_name2
Check packages dependencies
$ pip check
No broken requirements found.
# If your env has any dependency issues, you will see something here
