[issue38678] TypeError for Tutorial 10.3 Example 2

Raymond Hettinger added the comment: New changeset 39134b374fd506c5f0f6d232e259ba48c651d88f by Raymond Hettinger (Miss Islington (bot)) in branch '3.8': bpo-38678: Improve argparse example in tutorial (GH-17207) (GH-17212) https://github.com/python/cpython/commit/39134b374fd506c5f0f6d232e259b

[issue38678] TypeError for Tutorial 10.3 Example 2

Raymond Hettinger added the comment: New changeset d2faac63af007e52620c642dfcc576b787b55dcd by Raymond Hettinger (Miss Islington (bot)) in branch '3.7': bpo-38678: Improve argparse example in tutorial (GH-17207) (GH-17213) https://github.com/python/cpython/commit/d2faac63af007e52620c642dfcc57

[issue38678] TypeError for Tutorial 10.3 Example 2

Change by Raymond Hettinger : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___ ___

[issue38678] TypeError for Tutorial 10.3 Example 2

Raymond Hettinger added the comment: New changeset 04c79d6088a22d467f04dbe438050c26de22fa85 by Raymond Hettinger in branch 'master': bpo-38678: Improve argparse example in tutorial (GH-17207) https://github.com/python/cpython/commit/04c79d6088a22d467f04dbe438050c26de22fa85 -- _

[issue38678] TypeError for Tutorial 10.3 Example 2

Change by miss-islington : -- pull_requests: +16716 pull_request: https://github.com/python/cpython/pull/17213 ___ Python tracker ___ __

[issue38678] TypeError for Tutorial 10.3 Example 2

Change by miss-islington : -- pull_requests: +16715 pull_request: https://github.com/python/cpython/pull/17212 ___ Python tracker ___ __

[issue38678] TypeError for Tutorial 10.3 Example 2

Change by Terry J. Reedy : -- versions: +Python 3.7, Python 3.8, Python 3.9 ___ Python tracker ___ ___ Python-bugs-list mailing list

[issue38678] TypeError for Tutorial 10.3 Example 2

Terry J. Reedy added the comment: Raymond's patch changes the tutorial example to something more useful for beginners. It also gives the proper fix for the old example, which is to add 'default=0' after "action='count'", but puts this in the proper place, the ref manual explanation of 'coun

[issue38678] TypeError for Tutorial 10.3 Example 2

Change by Raymond Hettinger : -- keywords: +patch pull_requests: +16712 stage: needs patch -> patch review pull_request: https://github.com/python/cpython/pull/17207 ___ Python tracker ___

[issue38678] TypeError for Tutorial 10.3 Example 2

Raymond Hettinger added the comment: I'll replace this example with more representative one that works. -- assignee: docs@python -> rhettinger nosy: +rhettinger ___ Python tracker ___

[issue38678] TypeError for Tutorial 10.3 Example 2

Terry J. Reedy added the comment: Crash means 'python stopped erroneously without a traceback'. Same exception in 3.8 and 3.9. Argparse uses None for a count of 0. I consider this a bug. If not changed, it should be documented. As argparse is, the example needs to recode None to 0. (Or