[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/issue43

[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

[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.

[issue29282] Fused multiply-add: proposal to add math.fma()

Nico Schlömer <nico.schloe...@gmail.com> 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. :)

[issue29282] Fused multiply-add: proposal to add math.fma()

Nico Schlömer <nico.schloe...@gmail.com> 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 tra

[issue29282] Fused multiply-add: proposal to add math.fma()

Nico Schlömer <nico.schloe...@gmail.com> 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: +n