[Numpy-discussion] Args for ones, zeros, rand, eye, ones, empty (possible 1.0 change?)
Alan G Isaac
aisaac at american.edu
Sun Jul 2 23:24:47 CDT 2006
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On Mon, 3 Jul 2006, Bill Baxter apparently wrote:
> Here's another possible now or never change:
> fix rand(), eye(), ones(), zeros(), and empty() to ALL take either a tuple
> argument or plain list.
> I know this has been discussed before, but I really don't
> see why these methods can't be overloaded to accept either
> one.
I think the discussion has been slightly different than this.
The "numpy way" for array creation is generally to specify
dimension as tuples. A small number of functions violate
this, which is an unhappy inconsistency. Specifically,
rand() and randn() violate this. (Perhaps one could also
say that eye() violates this; I do not yet have an opinion.)
I argue that rand and randn should accept a tuple as the
first argument. Whether the old behavior is also allowed,
I have no opinion. But the numpy-consistent behavior should
definitely be allowed. I perhaps wrongly understood Robert
to argue that the current behavior of rand and randn is not
a wart since i. alternative tuple-accepting functions are
available and ii. the suprising behavior is documented.
This seems quite wrong to me, and I am farily confident that
such an argument would not be offered except in defence of
legacy code.
In fact, I would argue that if rand and randn are not
"fixed" to accept a tuple, then they should be moved into
a compatability module and not be considered part of numpy.
Cheers,
Alan Isaac
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