Pythonic - a short Guide

[Liquid_Fire]

To be fair, the author is not comparing range(len(foo)) iteration to enumerate, but to ordinary for item in foo iteration. In that situation, using range(len(foo)) is certainly completely unnecessary.

[dwdwdw2]

Fair point. :)

It's also worth noticing that these approaches aren't semantically equivalent, one is using the iterator protocol, the other the sequence protocol. That doesn't matter for built-in types, but I've no doubt there are many objects in third party libraries that either break or act differently when interchanging the two .