I occasionally find it useful to clear the screen when doing demos/presentations. I think the case for it is clear (hah) enough based on its long history and presence in many terminal emulators. But then again, the terminals I use and readline support it already, so I don't need python repl to do it for me.
+1 on having it. -1 on doing it in Python, per se. net +0. On Tue, Oct 13, 2020 at 19:12 David Mertz <[email protected]> wrote: > I teach a lot. But it's adults, and ones who have at least a little bit > of programming experience (perhaps in a different language, but something). > > I've never had anyone request a "clear screen" command. Of course, I > usually use Jupyter notebooks for teaching, so I'm not sure what that would > mean there anyway. But it definitely feels like a UI thing, not a PL > thing. About 30 seconds ago, I typed `%clear` in IPython... I'm not > certain it is the first time I've ever done so, but quite likely. It was > amazing, my screen was cleared :-). > > On Tue, Oct 13, 2020 at 6:38 PM Guido van Rossum <[email protected]> wrote: > >> Can one of the educators on the list explain why this is such a commonly >> required feature? I literally never feel the need to clear my screen -- but >> I've seen this requested quite a few times in various forms, often as a bug >> report "IDLE does not support CLS". I presume that this is a common thing >> in other programming environments for beginners -- even C++ (given that it >> was mentioned). Maybe it's a thing that command-line users on Windows are >> told to do frequently? What am I missing that students want to do >> frequently? Is it a holdover from the DOS age? >> >> On Tue, Oct 13, 2020 at 11:25 AM Mike Miller <[email protected]> >> wrote: >> >>> >>> On 2020-10-13 06:19, Stestagg wrote: >>> > For example, the pypi `console` library provides a method: >>> `console.sc.reset()` >>> > that behaves similarly to `CLS` on windows and also appears to be >>> fairly >>> > reliable cross-platform. >>> >>> >>> Yes, there is more to it than appears at first glance. There is >>> resetting the >>> terminal, clearing the currently visible screen, and/or the scrollback >>> buffer as >>> well. >>> >>> The legacy Windows console has another limitation in that I don't >>> believe it has >>> a single API call to clear the whole thing. One must iterate over the >>> whole >>> buffer and write spaces to each cell, or some similar craziness. That's >>> why >>> even folks writing C++ just punt and do a system("cls") instead. >>> >>> With the mentioned lib console, the example above prints the ANSI codes >>> to do a >>> terminal reset, and while that works widely these days, it should not be >>> the >>> first choice. It would be better to use the cross-platform wrapper >>> functions in >>> the console.utils module, either: >>> >>> # A DOS-like reset, clears screen and scrollback, also aliased to >>> cls() >>> reset_terminal() >>> >>> # A Unix-like clear, configurable via param, and aliased to clear() >>> clear_screen() >>> >>> -Mike >>> _______________________________________________ >>> Python-ideas mailing list -- [email protected] >>> To unsubscribe send an email to [email protected] >>> https://mail.python.org/mailman3/lists/python-ideas.python.org/ >>> Message archived at >>> https://mail.python.org/archives/list/[email protected]/message/MX54AOXMYJHGRVOO2XW3J7JWHQDDUKPQ/ >>> Code of Conduct: http://python.org/psf/codeofconduct/ >>> >> >> >> -- >> --Guido van Rossum (python.org/~guido) >> *Pronouns: he/him **(why is my pronoun here?)* >> <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/> >> _______________________________________________ >> Python-ideas mailing list -- [email protected] >> To unsubscribe send an email to [email protected] >> https://mail.python.org/mailman3/lists/python-ideas.python.org/ >> Message archived at >> https://mail.python.org/archives/list/[email protected]/message/J65P6UELD4RSSCSMAFYF52WADURHX2HL/ >> Code of Conduct: http://python.org/psf/codeofconduct/ >> > > > -- > The dead increasingly dominate and strangle both the living and the > not-yet born. Vampiric capital and undead corporate persons abuse > the lives and control the thoughts of homo faber. Ideas, once born, > become abortifacients against new conceptions. > _______________________________________________ > Python-ideas mailing list -- [email protected] > To unsubscribe send an email to [email protected] > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/[email protected]/message/Q6NTJLEPOTULRKE6WKJGXG4W7NMST7VU/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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