英文文档: sorted(iterable[, key][, reverse]) Return a new sorted list from the items in iterable. Has two optional arguments which must be specified as keyword arguments. key specifies a function of one argument that is used to extract a comparison key f…
英文文档: sorted(iterable[, key][, reverse]) Return a new sorted list from the items in iterable. Has two optional arguments which must be specified as keyword arguments. key specifies a function of one argument that is used to extract a comparison key f…
英文文档: len(s) Return the length (the number of items) of an object. The argument may be a sequence (such as a string, bytes, tuple, list, or range) or a collection (such as a dictionary, set, or frozen set). 说明: 1. 返回对象的长度,参数可以是序列(比如字符串.字节数组.元组.列表和ran…