[Numpy-discussion] Comparing x and x.view
Wed Feb 7 21:00:28 CST 2007
I want to compare whether two arrays point to the same data.
I've been using 'is' so far, but I'm wondering whether it's the right
If x is a plain ndarray, `x is x`, and `x is not x.view()`. I understand the
second one (I think so...), `x` and `x.view `are two different Python
objects. However, `x.__array_interface__ == x.view().__array_interface__`,
which means that the underlying memory hasn't been modified at all, right ?
In other terms, the data hasn't been copied, it's just being accessed
So, when I'm using `x is y` to test whether some data has been copied, I
should in fact compare the __array_interface__s, shouldn't I ?
Sorry for the poor phrasing, and thanks a lot for your forthcoming inputs.
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