摘要：
""" 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 con... 阅读全文
摘要：
""" range(stop) -> range object range(start, stop[, step]) -> range object Return an object that produces a sequence of integers from start (inclusive) to stop (exclusive) by step. range(i, j) prod... 阅读全文