[Python-Dev] Misc re.match() complaint

[Serhiy Storchaka]

16.07.13 20:21, Guido van Rossum написав(ла):
> The situation is most egregious if the target string is a bytearray,
> where there is currently no way to get the result as an immutable
> bytes object without an extra copy. (There's no API that lets you
> create a bytes object directly from a slice of a bytearray.)

m = memoryview(data)
if m:
    return m.cast('B')[low:high].tobytes()
else:
    # cast() doesn't work for empty memoryview
    return b''