[issue18511] random.shuffle could be faster

[Raymond Hettinger]

Raymond Hettinger added the comment:

The reversed() call is only executed once and is not inside the loop body, so its runtime is irrelevant to most shuffles.   Also, the reason that reversed() is used is that is adds clarity to the code.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18511>
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