[Numpy-discussion] array_equal returns True and 0

Keith Goodman kwgoodman@gmail....
Mon Jul 7 11:40:18 CDT 2008


On Mon, Jul 7, 2008 at 9:30 AM, Keith Goodman <kwgoodman@gmail.com> wrote:
> I'm writing the doc string for array_equal. From the existing one-line
> doc string I expect array_equal to return True or False. But I get
> this:
>
>>> np.array_equal([1,2], [1,2])
>   True
>>> np.array_equal([1,2], [1,2,3])
>   0
>>> np.array_equal(np.array([1,2]), np.array([1,2,3]))
>   0
>>> np.__version__
>   '1.1.0'

Oh, it's written in python:

def array_equal(a1, a2):
    """Returns True if a1 and a2 have identical shapes
    and all elements equal and False otherwise.
    """
    try:
        a1, a2 = asarray(a1), asarray(a2)
    except:
        return 0
    if a1.shape != a2.shape:
        return 0
    return logical_and.reduce(equal(a1,a2).ravel())

Could someone change the 0's to False? Otherwise it will return True,
False or 0.

>> np.array_equal([3,2], [1,2])
   False


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