[Patches] [ python-Patches-807334 ] Prevent duplicate warnings filters

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Patches item #807334, was opened at 2003-09-16 14:13
Message generated for change (Settings changed) made by rhettinger
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Category: Library (Lib)
Group: Python 2.3
>Status: Closed
Resolution: None
Priority: 5
Submitted By: Raymond Hettinger (rhettinger)
Assigned to: Jeremy Hylton (jhylton)
Summary: Prevent duplicate warnings filters

Initial Comment:
Multiple registration of the same filter contributes no 

value but causes unnecessary growing reference counts 

for repeated tests.  Also, the duplicates slow down the 

already excrutiatingly slow warning.warn() which now 

appears throughout the codebase.

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