[issue35686] BufferError with memory.release()

[Eryk Sun]

Eryk Sun <eryksun at gmail.com> added the comment:

> Or, obviously:
> 
> with open(fn, 'rb') as fd:
>     with mmap.mmap(fd.fileno(), 0, access=mmap.ACCESS_READ) as mm:
>         with memoryview(mm)[:2] as data:
>             print(data)

Doesn't this rely on the immediate finalization of the unreferenced memoryview instance that creates the slice? It would be nice if memoryview supported alternate constructors memoryview(obj, stop) and memoryview(obj, start, stop[, step]).

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nosy: +eryksun

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<https://bugs.python.org/issue35686>
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