[issue43786] slice(None) is slice(None) is False
New submission from Nico Schlömer : I stumbled upon this when dealing with NumPy arrays: ``` slice(None) is slice(None) ``` ``` False ``` This came up when trying to check if a variable `a` equals `slice(None)`. The comparison ``` a = slice(None) a == slice(None) ``` ``` True ``` works, but doesn't return a single Boolean if a is a NumPy array, for example. Perhaps there's another way of finding out if a variable is exactly `slice(None)`, but the failure of `is` seems like a bug. -- messages: 390598 nosy: nschloe priority: normal severity: normal status: open title: slice(None) is slice(None) is False ___ Python tracker <https://bugs.python.org/issue43786> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue43786] slice(None) is slice(None) is False
Nico Schlömer added the comment: Thanks very much, Steven, for the feedback and the suggestion. -- ___ Python tracker <https://bugs.python.org/issue43786> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue29282] Fused multiply-add: proposal to add math.fma()
Nico Schlömer added the comment: Do I read this thread correctly assuming that this hasn't been implemented yet? If not, I would probably make my own little library for this -- I really need the feature for the precision. -- nosy: +nschloe ___ Python tracker <https://bugs.python.org/issue29282> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue29282] Fused multiply-add: proposal to add math.fma()
Nico Schlömer added the comment: > Existing libm implementations don't work, Okay. Is this because of the inf/NaN discrimination hiccups mentioned above or are there any other pitfalls? -- ___ Python tracker <https://bugs.python.org/issue29282> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue29282] Fused multiply-add: proposal to add math.fma()
Nico Schlömer added the comment: Okay, thanks for the info. As a stop-gap measure, I've created pyfma [1, 2]. Install with ``` pip install pyfma ``` and use with ``` pyfma.fma(3.0, 2.0, 1.0) ``` Only works on Unix reliable then, but that's all I care about. :) Cheers, Nico [1] https://github.com/nschloe/pyfma [2] https://pypi.python.org/pypi/pyfma -- ___ Python tracker <https://bugs.python.org/issue29282> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue31415] Add -X option to show import time
Nico Schlömer added the comment: I just updated tuna [1] to support import time profiles as well. Install with ``` pip install tuna ``` and use with ``` python -X importprofile yourfile.py 2> import.log tuna import.log ``` See screenshot for example output. Cheers, Nico [1] https://github.com/nschloe/tuna -- nosy: +nschloe Added file: https://bugs.python.org/file47663/sc.png ___ Python tracker <https://bugs.python.org/issue31415> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
