[issue18515] zipfile._ZipDecryptor generates wasteful crc32 table on import

[Daniel Holth]

Daniel Holth added the comment:

It takes 706 microseconds.

On my machine 

%timeit import sys; del sys.modules['zipfile']; import zipfile "import
zipfile"

takes 2.51 ms without the patch and 1.7 ms with the patch.

On Sat, Jul 20, 2013, at 12:13 PM, Serhiy Storchaka wrote:
> 
> Serhiy Storchaka added the comment:
> 
> How much time take it?
> 
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> Python tracker <report at bugs.python.org>
> <http://bugs.python.org/issue18515>
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