In [1]: enumerate?
Init signature: enumerate(self, /, *args, **kwargs)
Docstring:
enumerate(iterable[, start]) -> iterator for index, value of iterable
Return an enumerate object. iterable must be another object that supports
iteration. The enumerate object yields pairs containing a count (from
start, which defaults to zero) and a value yielded by the iterable argument.
enumerate is useful for obtaining an indexed list:
(0, seq[0]), (1, seq[1]), (2, seq[2]), ...
Type: type
In [2]: a = (1, 2, 3)
In [3]: for idx, value in enumerate(a):
...: print(idx, "|", value)
...:
0 | 1
1 | 2
2 | 3
In [4]: for idx, value in enumerate(a, 1):
...: print(idx, "|", value)
...:
1 | 1
2 | 2
3 | 3
In [5]: for idx, value in enumerate(a, 9):
...: print(idx, "|", value)
...:
9 | 1
10 | 2
11 | 3
In [6]:
enumerate 使用
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