It's on of those things people using Python for so long forget about: Some people try to run individual files and cd around the place. I never do that anymore.

It's on of those things people using Python for so long forget about: Some people try to run individual files and cd around the place. I never do that anymore. I have a test suite and breakpoints and that's it. But before you've learned those tools it feels natural to "run that file there" and then say "oh hey why doesn't it work any more?"