[Python-3000] have zip() raise exception for sequences of different lengths (original) (raw)
Raymond Hettinger rhettinger at ewtllc.com
Thu Aug 31 02:03:17 CEST 2006
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Proposed change:
zip( [iterable, ...]) This function returns a list of tuples, where the i-th tuple contains the i-th element from each of the argument sequences or iterables. It is an error if the argument sequences are of different lengths... That seems pretty comparable in complexity to me. Could you explain how this makes zip() harder to understand?
It's a PITA because it precludes all of the use cases whether the inputs ARE intentionally of different length (like when one argument supplys an infinite iterator):
for lineno, ts, line in zip(count(1), timestamp(), sys.stdin): print 'Line %d, Time %s: %s)' % (lineno, ts, line)
Raymond
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