Serhiy Storchaka added the comment:
> # Using zlib's interface
> while not d.eof:
> compressed = d.unconsumed_tail or f.read(8192)
> if not compressed:
> raise ValueError('End-of-stream marker not found')
> output = d.decompress(compressed, 8192)
> # <process output>
This is not usable with bzip2. Bzip2 uses large block size and unconsumed_tail
can be non empty but decompress() will return b''. With zlib you possible can
see the same effect on some input when read by one byte.
> A related, but orthogonal proposal: We might want to make unconsumed_tail
> a memoryview (provided the input data is know to be immutable), to avoid
> creating an unnecessary copy of the data.
It looks interesting. However the data should be copied anyway if the input
data is not a bytes object.
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<http://bugs.python.org/issue15955>
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