[Patches] [ python-Patches-551410 ] xrange() optimization

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Patches item #551410, was opened at 2002-05-02 13:39
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Category: Core (C code)
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: Raymond Hettinger (rhettinger)
Assigned to: Nobody/Anonymous (nobody)
Summary: xrange() optimization

Initial Comment:
Performance improvement for xrange() when used in 
loops or list(xrange()).  Does NOT change external 
interface or restart characteristics.

Fills the tp_iter and tp_iternext slots to provide 
faster looping than access via sq_item wrapped by an 
iterobject.

Times about 25% faster than the original.  Brings
the performance to within 5 to 7% of range().

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http://sourceforge.net/tracker/?func=detail&atid=305470&aid=551410&group_id=5470