How To Update All Python Packages

python-upgrade-package.md

Python Package Upgrade Checklist

Get a list of all the outdated packages

$ pip list --outdated

Open a command shell by typing ‘powershell’ in the Search Box of the Task bar
Update All Python Packages On Windows

$ pip freeze | %{$_.split('==')[0]} | %{pip install --upgrade $_}

Update All Python Packages On Linux

$ pip3 list --outdated --format=freeze | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip3 install -U 

Pip can be used to upgrade all packages on either Windows or Linux:

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1. Output a list of installed packages into a requirements file (requirements.txt):

$ pip freeze > requirements.txt

2. Edit requirements.txt, and replace all ‘==’ with ‘>=’. Use the ‘Replace All’ command in the editor.

3. Upgrade all outdated packages:

$ pip install -r requirements.txt --upgrade

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Updating All Packages In A Pipenv Environment

The simplest way to update all the unpinned packages in a specific virtual environment created with pipenv is to do the following steps:

Activate the Pipenv shell that contains the packages to be upgraded

$ pipenv shell

Upgrade all packages

$ pipenv update

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If a requirements.txt file is not available, you can use the pip show command to output all the requirements of a specified package:

$ pip show <packagename>

Automatically create requirements.txt

You can use the following code to generate a requirements.txt file:

$ pip install pipreqs
$ pipreqs /path/to/project

More info related to pipreqs can be found here. Sometimes you come across pip freeze, but this saves all packages in the environment including those that you don't use in your current project.