En Sat, 05 May 2007 05:15:32 -0300, kaens <[EMAIL PROTECTED]> escribió:
> I think the for i in range() is more readable (Maybe because I'm > coming from a c-style syntax language background) - but what would > the benefits of using enumerate be (other that being more . . . > pythonesque?) If you want to iterate over a sequence and process each item, you could do this (as one would do in C): for i in range(len(values)): dosomethingwith(values[i]) Problems: values[i] gets translated into values.__getitem__(i), and that requires a lookup for the __getitem__ method and a function call; and you don't actually need the index i, but it's created anyway. In this case the best (and fastest) way in Python is: for item in values: dosomethingwith(item) No spurious variable, no method lookup, no aditional function call. But what if you need *also* the index? On earlier Python versions one had to go back to the first method; enumerate() was made just for this case: for i, item in enumerate(values): dosomethingwith(item, i) You get all the advantages of the iterator approach plus the index available. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
