PowerShell script file for updating packages

[Gribouillis]

I will need to have an easy way of excluding the problem packages

If you mean in the pip command line, you could replace it by something like

from pathlib import Path
import subprocess as sp
import sys

with Path('req0.txt').open('w') as ofile:
    sp.run([
        sys.executable, '-m', 'pip', 'list', '--outdated', 
        '--exclude', 'idna', '--exclude', 'mistune',
        '--exclude', 'tomli', '--format=freeze', '--user'], stdout=ofile)