[issue1501108] Add write buffering to gzip

[Lukas Lueg]

Lukas Lueg <knabberknusperhaus at yahoo.de> added the comment:

This is true for all objects whose input could be concatenated.

For example with hashlib:

data = ['foobar']*100000
mdX = hashlib.sha1()
for d in data:
    mdX.update(d)
mdY = hashlib.sha1()
mdY.update("".join(data))

mdX.digest() == mdY.digest()

the second version is multiple times faster...

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nosy: +ebfe

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue1501108>
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