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pip commands You Should Know!!!

#pip #python

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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
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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
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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
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Install a package 

$ pip install package_name
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Install a specific version 

$ pip install tensorflow==1.14.0
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Update a package 

$ pip install -U package_name
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Uninstall a package 

$ pip uninstall -y package_name
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Install multiple packages 

$ pip install package_name1 package_name2
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Install packages by requirements.txt 

$ pip install -r requirements.txt
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Uninstall multiple packages 

$ pip uninstall -y package_name1 package_name2
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Check packages dependencies 

$ pip check
No broken requirements found.

# If your env has any dependency issues, you will see something here
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