[issue10360] _weakrefset.WeakSet.__contains__ should not propagate TypeErrors

[Tres Seaver]

Changes by Tres Seaver <tseaver at agendaless.com>:


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components: +Library (Lib)
keywords: +patch
Added file: http://bugs.python.org/file19545/issue10360.patch

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<http://bugs.python.org/issue10360>
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