Re: Why isn't there a built-in product()?

[Oscar Benjamin]

On Thu, 7 Jul 2022 at 22:55, Michael F. Stemper
 wrote:
>
> sum() is wonderful.
>
>   >>> nums = [1,2,3]
>   >>> sum(nums)
>   6
>   >>> product(nums)
>   Traceback (most recent call last):
> File "", line 1, in 
>   NameError: name 'product' is not defined
>   >>>
>
> I understand that there is no product() or prod(). Does anybody
> here know why that was not included in the language? It seems
> as if it would be useful, so there must have been some rationale
> for that decision.

There is math.prod:

  >>> from math import prod
  >>> prod([1, 2, 3, 4])
  24

https://docs.python.org/3/library/math.html#math.prod

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Oscar
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Why isn't there a built-in product()?

[Michael F. Stemper]

sum() is wonderful.

 >>> nums = [1,2,3]
 >>> sum(nums)
 6
 >>> product(nums)
 Traceback (most recent call last):
   File "", line 1, in 
 NameError: name 'product' is not defined
 >>>

I understand that there is no product() or prod(). Does anybody
here know why that was not included in the language? It seems
as if it would be useful, so there must have been some rationale
for that decision.

--
Michael F. Stemper
87.3% of all statistics are made up by the person giving them.
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Python 3.9 pidfd_open

[Weatherby,Gerard]

python introduced os.pidfd_open(), which works as documented.

My development environment, PyCharm, complains about it being undefined.

Should it be in https://raw.githubusercontent.com/python/cpython/3.9/Lib/os.py ?

--
Gerard Weatherby | Application Architect
NMRbox | NAN | Department of Molecular Biology and Biophysics | UConn Health
263 Farmington Avenue, Farmington, CT 06030-6406
uchc.edu
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