Alexander Belopolsky added the comment: Raymond,
There must be a reason why we constantly disagree. Do you live in California by any chance? :-) I am not sure if map(None, ..) fate is still up for voting given your changes at r60206, but your own patch illustrates the problem that I highlighted: < it = izip(map(key, in1), count(), in2) # decorate -- > keys = in1 if key is None else map(key, in1) > it = izip(keys, count(), in2) # decorate See http://svn.python.org/view/python/branches/py3k/Lib/heapq.py?rev=60206&view=diff&r1=60206&r2=60205&p1=python/branches/py3k/Lib/heapq.py&p2=/python/branches/py3k/Lib/heapq.py With filter, availability of bool as a substitute for None is probably making special handling unnecessary because __nonzero__ is called on every object anyways. In the case of map(None,...) the optimization is more substantial and without None is precluded by the absence of a singleton identity function. __________________________________ Tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue2186> __________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
