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This article mainly introduces the relevant knowledge of "Ubuntu how to upgrade all Python libraries at one time". Xiaobian shows you the operation process through actual cases. The operation method is simple and fast, and the practicality is strong. I hope this article "Ubuntu how to upgrade all Python libraries at one time" can help you solve the problem.

What is pip?

ip is a python package management tool, which provides the functions of finding, downloading, installing and uninstalling python packages.

Upgrade pip version

The default pip that comes with ubuntu (pip 9.0.1) is based on python 2.7.

We need to reinstall python3-based pip:

sudo apt-get install python3-pip

= Upgrade pip3 version:

python3 -m pip install --upgrade pip

Check the pip version of python3 and see if the following error is reported:

importerror: cannot import name main

Workaround: Edit the usr/bin/pip3 file

Before modification:

from pip import mainif __name__ == '__main__': sys.exit(main())

After modification:

from pip import __main__if __name__ == '__main__': sys.exit(__main__._ main())

Verification modification has taken effect successfully: pip3 -v

Terminal Print:

pip 19.3.1 from /home/work/.local/lib/python3.6/site-packages/pip (python 3.6)

Next, upgrade all python packages with one click

Write a python script to execute, here is the code:

import pkg_resourcesfrom subprocess import call for packages in [dist.project_name for dist in pkg_resources.working_set]: call("pip3 install --upgrade " + ''.join(packages) + ' --user', shell=true)

Because the pip corresponding to python3 is pip3, the pip in call("pip3 install --upgrade " + '.join(packages) + ' --user', shell=true) should be written as pip3

Next, check out Python's historical versions of the package and those:

pip3 list --outdated

Terminal Print:

package version latest type----------- ------- ------ -----distro-info 0.0.0 0.10 sdistpycairo 1.16.2 1.18.1 sdistpycups 1.9.73 1.9.74 sdistpygobject 3.26.1 3.34.0 sdist

And then use it on these unupgraded packages

pip3 install --upgrade Name of package to upgrade

Command to upgrade one by one

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