[BiteCode_dev]

When doing dev, there a be other problems with pyc files. On of them is deleting the original py file, but still being able to import the module because Python will import any pyc file it if exist.

So if performances allow you to do so, disabling them when you dev is not a bad idea, as long as you keep them enabled when you run CI.

IMO, when you dev, you should set PYTHONHASHSEED (random is predictible), PYTHONDEVMODE (verbose warnings + tooling + sys.flags.dev_mode=True) and PYTHONDONTWRITEBYTECODE (remove the need for cleaning them).

In CI and prod, you should make sure those are NOT set, and use PYTHONOPTIMIZE=2 (remove assert, __debug__ lines and docstring) if you trust your dependancies to be well written (which I would check by running tests in a pre-push hook).