[issue1757118] utilize 2.5 try/except/finally in contextlib

[Fyrn Jilot]

Changes by Fyrn Jilot <fyrn76ji at yahoo.com>:


Added file: http://bugs.python.org/file25625/1.html

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue1757118>
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