REPL-based development. You might be developing a script, but notice a bug. If you import your script as a module, you can run the function you’re debugging, fi

REPL-based development. You might be developing a script, but notice a bug. If you import your script as a module, you can run the function you’re debugging, figure out what’s wrong, edit the file, and then reimport the module (using importlib.reload).