How can I avoid nested tuple unpacking when enumerating zipped lists?

问题

How can I avoid using nested tuple unpacking when enumerating a list of tuples like this?

for i, (x, y) in enumerate(zip("1234", "ABCD")):
    # do stuff

回答1:

Use itertools.count to avoid nested tuple unpacking:

from itertools import count

for i, x, y in zip(count(), "1234", "ABCD"):
    # do stuff

来源：https://stackoverflow.com/questions/11968729/how-can-i-avoid-nested-tuple-unpacking-when-enumerating-zipped-lists