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Title: bpo-37827: IDLE shell handling of \r and \b control chars by taleinat · Pull Request #15211 · python/cpython · GitHub

Open Graph Title: bpo-37827: IDLE shell handling of \r and \b control chars by taleinat · Pull Request #15211 · python/cpython

X Title: bpo-37827: IDLE shell handling of \r and \b control chars by taleinat · Pull Request #15211 · python/cpython

Description: This is a first working version, looking for some user testing and feedback! This allows most progress bars to just work in IDLE, rather than flooding the shell window and sometimes slowing it down to a crawl. More generally, this makes IDLE's shell behave more similarly to a plain Python shell in a terminal. Note that some progress bar libraries, e.g. tqdm, now "just work"! In some cases some integration might be required; for example, TensorFlow does several checks on the sys.stdout file-like object to decide whether to use these control characters. Hacking TensorFlow to override that check makes it work as intended in the IDLE shell with this change. Note that this also currently includes a subtle change which attempts to avoid clobbering the user input when output is written after a command has finished executing, e.g. by a separate thread. But that's not the main addition here. https://bugs.python.org/issue37827

Open Graph Description: This is a first working version, looking for some user testing and feedback! This allows most progress bars to just work in IDLE, rather than flooding the shell window and sometimes slowing it down...

X Description: This is a first working version, looking for some user testing and feedback! This allows most progress bars to just work in IDLE, rather than flooding the shell window and sometimes slowing it down...

Opengraph URL: https://github.com/python/cpython/pull/15211

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bpo-37827: IDLE shell handling of \r and \b control chars https://github.com/python/cpython/pull/15211/files#top
Show all changes 13 commits https://github.com/python/cpython/pull/15211/files
443db01 optimize PyShell.write() taleinat Aug 11, 2019 https://github.com/python/cpython/pull/15211/commits/443db0199749ae5895b8a80e9b58285a844c9050
ebf51d0 first working version of control char handling in shell taleinat Aug 11, 2019 https://github.com/python/cpython/pull/15211/commits/ebf51d0d9fff4ba1c93d4fc38c6d4aaaea4307dd
b611193 improved, clarified, plus fixes taleinat Aug 11, 2019 https://github.com/python/cpython/pull/15211/commits/b611193e0f56e4b642af3b996ae0e529e05b8bc5
83e41cf just move the cursor rather than truncate the line taleinat Aug 11, 2019 https://github.com/python/cpython/pull/15211/commits/83e41cf0cfa408c534f6b7ad0b5faba30642181c
3cbd2fd implemented handling of output cursor taleinat Aug 11, 2019 https://github.com/python/cpython/pull/15211/commits/3cbd2fd5d7581977fdfc61262fcdef60762c7d78
1135761 some tests and a couple of small fixes taleinat Aug 11, 2019 https://github.com/python/cpython/pull/15211/commits/11357617ae23cccd80afe6e086de98a384dbebe8
1d32615 another test and important edge-case fix taleinat Aug 12, 2019 https://github.com/python/cpython/pull/15211/commits/1d32615725f1ca697be75d2cf8d76aff1cd848c4
4dde76e major optimization: return "cursor_back" rather than "cursor" taleinat Aug 12, 2019 https://github.com/python/cpython/pull/15211/commits/4dde76e0794dc82647a9e94fa46cfedf0da59d5d
017bf8a minor code cleanup taleinat Aug 12, 2019 https://github.com/python/cpython/pull/15211/commits/017bf8a48298686c704a7d84f7bc5cf3800fd1ae
04b8aba avoid unnecessary re-writes with controls chars at start or end taleinat Aug 12, 2019 https://github.com/python/cpython/pull/15211/commits/04b8aba602e8d4891919f64ecd76011df7476fab
1903c56 make the internal write() function a staticmethod taleinat Aug 13, 2019 https://github.com/python/cpython/pull/15211/commits/1903c564899c2e5e9ce073b835aad6211881486a
93c5bc5 update idle.rst taleinat Aug 13, 2019 https://github.com/python/cpython/pull/15211/commits/93c5bc583f33c28bd38ccf64403454496b934fdd
6e4c73c add entries to NEWS and What's New taleinat Aug 13, 2019 https://github.com/python/cpython/pull/15211/commits/6e4c73cf1d04d6ff6f370a74ca2fe91452b95f43
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