Python的排序算法

This module provides tools to sort strings in a "human-expected" order. Because human expectations are fuzzy and often self-contradictory, the sort order is not guaranteed to be stable between versions of this module (rather the opposite - the primary reason to update it will probably be changed sort results). If available, this module uses the ICU localization library. Otherwise, it uses the system"s locale database (and produces significantly worse results).