[issue13200] Add start, stop and step attributes to range objects

[Ezio Melotti]

Changes by Ezio Melotti <ezio.melotti at gmail.com>:


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keywords: +needs review, patch
nosy: +ezio.melotti
stage:  -> patch review
versions: +Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13200>
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