Install PyQt5 on Raspberry for Python3.6

Question

Since I found no answer for my question, neither in older posts nor in other forums, I want to ask the stackoverflow community for advice.

I am using a raspberry pi 3B

Answer 1

In my case it helped to update pip from verion 18 to the newest, in my case 20.2 (python -m pip install --upgrade pip) and then do a pip install PyQt5.