[issue12834] memoryview.tobytes() incorrect for non-contiguous arrays

[Stefan Krah]

Stefan Krah <stefan-usenet at bytereef.org> added the comment:

Antoine Pitrou <report at bugs.python.org> wrote:
> That's rather funky. What should the right result be?

Basically [5, 4, 3, 2, 1] as bytes:

'\x05\x04\x03\x02\x01'

Looks like an off-by-one error.

I was a bit surprised that tobytes() automatically converts anything
to a C-contiguous array. The result can be completely disconnected
from the raw memory.

[The bug also exists for forward strides.]

array([1, 3, 5], dtype=uint64)
>>> m = memoryview(y)
>>> m.tobytes()
'\x03\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00'
>>>

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12834>
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