常見例句Returns the number of distinct, nonempty tuples in a set.返回集中非重復(fù)的非空元組的數(shù)目。It is also possible to create tuples which contain mutable objects, such as lists.也可以通過(guò)包含可變對(duì)象來(lái)創(chuàng)建元組，例如鏈表。 返回 tuples