8000 DOC: clarify documentation for transpose() by danpovey · Pull Request #15024 · numpy/numpy · GitHub
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DOC: clarify documentation for transpose() #15024

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Merged
merged 3 commits into from
Dec 6, 2019
Merged

DOC: clarify documentation for transpose() #15024

merged 3 commits into from
Dec 6, 2019

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danpovey
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@danpovey danpovey commented Dec 2, 2019

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@danpovey danpovey force-pushed the transpose_doc_patch branch from e49c534 to dedee47 Compare December 2, 2019 02:54
@danpovey danpovey force-pushed the transpose_doc_patch branch from dedee47 to 9bf03f6 Compare December 2, 2019 02:57
@XVilka XVilka mentioned this pull request Dec 2, 2019
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seberg
seberg reviewed Dec 2, 2019
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numpy/core/fromnumeric.py Outdated
according to the values given.
axes : tuple or list of ints, optional
If not specified, this function reverses the order of the axes.
If specified, it must be a tuple, list or similar object which contains
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"similar object", is typically called "sequence" in python language. In fact, tuple or list can probably also be replaced with sequence. Unless we want to nudge people towards tuple specifically (since in many cases axes has to be a tuple).

Looks good to me.

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I would lean towards documenting it as just tuple or list, and not encouraging users to to pass anything else.

eric-wieser
eric-wieser reviewed Dec 3, 2019
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eric-wieser
eric-wieser reviewed Dec 3, 2019
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eric-wieser
eric-wieser reviewed Dec 3, 2019
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numpy/core/fromnumeric.py Outdated
Comment on lines 608 to 609
For an array a with two axes, transpose(a) gives the matrix transpose
of a.
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I think PEP257 needs a blank line before this sentence.

Suggested change
For an array a with two axes, transpose(a) gives the matrix transpose
of a.
For an array ``a`` with two axes, ``transpose(a)`` gives the matrix transpose
of a.

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This comment still applies.

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Pushed fix

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danpovey commented Dec 3, 2019

Addressed the comments

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seberg commented Dec 3, 2019

Thanks, if you still have some patience. I noticed that the return section says it normally returns a view. That is incorrect. transpose will always return a view.

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danpovey commented Dec 3, 2019 via email

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eric-wieser commented Dec 3, 2019 •
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That is incorrect. transpose will always return a view.

You wish... transpose will return whatever the subclass of ndarray decides to implement their transpose method as, which in the past has not always been a view. I think this came up when I was implementing #8441.

Channeling past you:

I guess a subclass could cause a copy (the code looks like subclassing doing something fancy is not be anticipated, there may be a bug here),

@danpovey danpovey force-pushed the transpose_doc_patch branch from d56e5a1 to a563892 Compare December 3, 2019 21:11
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danpovey commented Dec 3, 2019 via email

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seberg commented Dec 3, 2019

That is incorrect. transpose will always return a view.

You wish... transpose will return whatever the subclass of ndarray decides to implement their transpose method as, which in the past has not always been a view. I think this came up when I was implementing #8441

:(

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@seberg: See my edit - we discussed this before.

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danpovey commented Dec 5, 2019

Guys, if I am supposed to make any change to this it's not clear to me. Just a reminder- please clarify if it's not OK.

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seberg commented Dec 6, 2019

Sounds like an improvement. Thanks @danpovey.

@seberg seberg merged commit 95e570c into numpy:master Dec 6, 2019
@seberg seberg mentioned this pull request Dec 6, 2019
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