英文文档:
enumerate(iterable, start=0)
Return an enumerate object. iterable must be a sequence, an iterator, or some other object which supports iteration. The __next__()&...
enumerate()是Python的内置函数。
help(enumerate)
Help on class enumerate in module builtins:
class enumerate(object)
enumerate(iterable[, start]) -> iterator for index, value of iterable
...