Learn the NumPy trick for generating synthetic data that actually behaves like real data.
"Forget" about indentaition. You should still write beautiful code, but if you mess up with tabs/spaces, or copy one piece of code to another that uses a different indentation style, it won't break.
Check if there are potential typosquatters on a package you care about. Check if there are potential typosquatters on the most downloaded PyPI packages. Check if packages newly added to PyPI are ...