pip updates all packages that need to be updated

Create a new shell file
such as upgrade.sh
enter the following

for i in `pip list -o --format legacy|awk '{print $1}'` ; do sudo -H pip install --upgrade $i; done

pip list -o get all packages to be updated
format has two options, one is legacy and the other is columns
The latter will have a header:
Package Version Latest Type
So choose to use the legacy format
Use awk to get the first column
Traverse update

There is another way:
Use python, run with root privileges

import pip  
from subprocess import call  

for dist in pip.get_installed_distributions():  
    call("pip install --upgrade " + dist.project_name, shell=True)

But after traversing all installed packages, the efficiency is slow

Intelligent Recommendation

Python Pip Update All Packages

Code: ...

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