[issue23688] unnecessary copying of memoryview in gzip.GzipFile.write ?

[STINNER Victor]

STINNER Victor added the comment:

> Better way is data = data.cast('B').

Why is this cast required? Can you please elaborate? If some memoryview must be rejected, again, we need more unit tests.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23688>
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