ERROR: Could not find a version that satisfies the requirement sys (from versions: none) ERROR: No matching distribution found for sy - how to fix?

Question

pip

Good afternoon, when I try to install a module via pip I get the following error: "ERROR: Could not find a version that satisfies the requirement sys (from versions: none)
ERROR: No matching distribution found for sys". And so with any module. I looked at a bunch of sites and solutions, but nothing helped me. Most likely it is my hands that do not grow out of my shoulders.

Answer 1

some modules do not need to be imported and specified in requirements.txt