Hi,

On Wed, Oct 11, 2023 at 9:17 AM Peter Cock via NumPy-Discussion
<numpy-discussion@python.org> wrote:
>
>
>
> On Tue, Oct 10, 2023 at 6:32 PM Matthew Brett <matthew.br...@gmail.com> wrote:
>>
>> Hi,
>>
>>
>> On Tue, 10 Oct 2023 at 00:55, Andrew Nelson <andyf...@gmail.com> wrote:
>> >
>> >
>> > On Mon, 9 Oct 2023 at 23:50, Matthew Brett <matthew.br...@lis.ac.uk> wrote:
>> >>
>> >> Hi,
>> >>
>> >> On Mon, Oct 9, 2023 at 11:49 AM Andrew Nelson <andyf...@gmail.com> wrote:
>> >> Could you say more about why you consider:
>> >> np.mean(x, dropna=True)
>> >> to be less clear in intent than:
>> >> np.nanmean(x)
>> >> ?  Is it just that someone could accidentally forget that the default
>> >
>> >
>> > The discussion isn't a deal breaker for me, I just wanted to put out a 
>> > different POV.
>> > The name of the function encodes what it does. By putting them both in the 
>> > function name it's clear what the function does.
>> >
>> > ...
>> >
>> > Imagine that one has a large codebase and you have to find all the 
>> > locations where nans could affect a mean. There may be lots of prod, sum, 
>> > etc, also distributed within the codebase. You wouldn't want to search for 
>> > `dropna` because you get every function that handles a nan. If you search 
>> > for nanmean you only get the locations you want.
>>
>> So, is this the more or less the difference between:
>>
>> grep 'np\.nanmean' *.py
>>
>> and
>>
>> grep 'np\.mean(.*,\s*dropna\s*=\s*True' *.py
>>
>> ?
>>
>> Cheers,
>>
>> Matthew
>>
>
> Keep in mind that the dropna argument might very well be on a different
> line (especially with black formatting), so searches could be much harder
> than looking for the nanmean function.
>
> (I do not deal with enough NaN data to have a strong view either way here)

Sorry - yes - I had kept that in mind - it's just the regexp would
have been a bit more complex, and I was trying to get at the point
that:

a) We won't find ourselves wanting do such a search very often (I
can't remember eve needing it), and
b) When we do have to do such a search, it's well within the wit of
man to do it.

Cheers,

Matthew
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