[issue15535] Fix pickling efficiency of named tuples in 2.7.3

[Raymond Hettinger]

Changes by Raymond Hettinger <raymond.hettinger at gmail.com>:


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assignee: amaury.forgeotdarc -> rhettinger
resolution:  -> fixed
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15535>
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