Ubuntu 18.04 one-click upgrade of all third-party Python packages and installation of Python packages

1. What is pip

pip is a Python package management tool that provides the functions of searching, downloading, installing, and uninstalling Python packages.

2. Upgrade pip version

1. The default pip (pip 9.0.1) that comes with Ubuntu is based on Python 2.7

2. We need to reinstall pip based on Python3:

sudo apt-get install python3-pip

3. Upgrade pip3 version:

python3 -m pip install --upgrade pip

4. Check the pip version of Python3. If the following error is reported:

ImportError: cannot import name main

Solution: Edit the usr/bin/pip3 file

Before modification:

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

After modification:

from pip import __main__
if __name__ == '__main__':
  sys.exit(__main__._main())

Verify that the fix has taken effect successfully: pip3 -V

The terminal prints:

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

5. Upgrade all Python packages with one click

Just write a Python script to execute it. Here is the code:

import pkg_resources
from 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 my Python3 is pip3, the pip in the script call("pip3 install --upgrade " + ''.join(packages) + ' --user', shell=True) should be written as pip3

Next, let's check what other packages there are in the historical versions of Python:

pip3 list --outdated

The terminal prints:

Package Version Latest Type
----------- ------- ------ -----
distro-info 0.0.0 0.10 sdist
pycairo 1.16.2 1.18.1 sdist
pycups 1.9.73 1.9.74 sdist
pygobject 3.26.1 3.34.0 sdist

Then use these non-upgraded packages

pip3 install --upgrade 要升級的包名

You can run the command to upgrade them one by one. I don’t use those four packages often, so I’m too lazy to upgrade them. . . (PS: I just installed Ubuntu 18.04, so it’s not convenient to take screenshots. Let’s just watch it for now-.-)

Knowledge point extension: Ubuntu 18.04 installs Python package

Recently, I have been running two models at the same time, and the cloud server can't handle it.

I got a company windows host, changed it to ubuntu18.04 and gave it to me to use mbp remote ssh. Cool~

1. Configure ssh-server

2. Install Python, etc.

Unbuntu18.04 comes with python3.6.8

1. Install pip3 and execute

sudo apt install python3-pipi

2. Install vim and execute

sudo apt install vim

2. Configure the image first and then install each python package

pip3 install some-package

Torch actually shows that it takes 20 hours to download, so I still use Tsinghua pypi mirror 8~

Note that an error may occur after upgrading pip10

ERROR: Could not install packages due to an EnvironmentError: [Errno 13] Insufficient permissions: '/usr/local/lib/python3.6/dist-packages/defusedxml-0.6.0.dist-info'
Consider using the `--user` option or check the permissions.

Just add --user after install:

pip3 install -user some-package

Summarize

The above is the method of upgrading all third-party Python packages and installing Python packages in Ubuntu 18.04 with one click. I hope it will be helpful to everyone. If you have any questions, please leave me a message and I will reply to you in time. I would also like to thank everyone for their support of the 123WORDPRESS.COM website!
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