shangxiao added the comment: Here's the section in the docs for BooleanOptionalAction: https://docs.python.org/3.9/library/argparse.html#action ---------- title: BooleanOptionalAction missing "New in version 3.9" -> Docs for argparse.BooleanOptionalAction missing "New in version 3.9" _______________________________________ Python tracker https://bugs.python.org/issue42194 _______________________________________

Change by Karthikeyan Singaravelan : ---------- nosy: +paul.j3, rhettinger _______________________________________ Python tracker https://bugs.python.org/issue42194 _______________________________________