how do I update python pip to 3.4 on a raspberry pi?

Question

I was trying to install preview-generator and so I typed pip install preview-generator and I got this: ERROR: Package 'preview-generator' requires a different Python: 2.7.16 not in '>= 3.4' so I tried pip install -U pip and it said that Requirement already up-to-date: pip in ./.local/lib/python2.7/site-packages (20.3.4) so how would I update it?

Edit: I tried pip3 install preview-generator and it worked

Answer 1

My suggestion is: don't mess your system's python installation. There might be other modules that depend on that being what it is. Use pyenv to manage python versions.

Check https://github.com/pyenv/pyenv

Check this post for a detailed explanation: https://realpython.com/intro-to-pyenv/