Original version by Andrew Dalke with a major update by Raymond Hettinger原始版本是Andrew Dalke，然后更新的是Raymond Hettinger
There are many ways to use them to sort data and there doesn't appear to be a single, central place in the various manuals describing them, so I'll do so here.有许多方法对数据排序，但在各种手册中没有一个单一的，集中的地方描述。所以我将来做这件事。
Sorting Basics基本排序A simple ascending sort is very easy -- just call the sorted() function. It returns a new sorted list: 一个简单的升序排序很简单 -- 调用 sorted() 函数。它返回一个排好序的列表 You can also use the list.sort() method of a list. It modifies the list in-place (and returns None to avoid confusion). Usually it's less convenient than sorted() - but if you don't need the original list, it's slightly more efficient. 你也可以就地使用list自带的list.sort()（返回None为了避免混乱），通常它没有sorted()方便。--但是如果你不需要原始的list.他稍微更加高效
a = [5, 2, 3, 1, 4]a_asc = sorted(a)print a_asca_desc = sorted(a, reverse=True)print a_desc运行结果：C:\Python27\python.exe F:/python/pysort.py[1, 2, 3, 4, 5][5, 4, 3, 2, 1] a = [5, 2, 3, 1, 4] a.sort() print a a = [5, 2, 3, 1, 4] q = a.sort(reverse=True) print a print q 运行结果： C:\Python27\python.exe F:/python/pysort.py [1, 2, 3, 4, 5] [5, 4, 3, 2, 1] None
Another difference is that the list.sort() method is only defined for lists. In contrast, the sorted() function accepts any iterable. 有一点不同，list.sort()适用于lists，于此相反，而sorted（）适用于所有iterable
__author__ = 'dell'from operator import itemgetter, attrgetterb = sorted({1: 'D', 2: 'B', 3: 'B', 4: 'E', 5: 'A'})print bsen = 'this is a test string from andrew'.split()res = sorted(sen, key=str.lower)print resclass Student: def __init__(self, name, grade, age): self.name = name self.grade = grade self.age = age def __repr__(self): return repr((self.name, self.grade, self.age))student_objects = [Student('john', 'A', 15), Student('jane', 'B', 12), Student('dave', 'B', 10)]res_std = sorted(student_objects, key= lambda student: student.age)print res_stdres_std = sorted(student_objects, key=attrgetter('age'))print res_stdres_std = sorted(student_objects, key=attrgetter('grade', 'age'))print res_stdprint '---------------------------------------------------------------'student_tuples = [('john', 'A', 15), ('jane', 'B', 12), ('dave', 'B', 10)]stus = sorted(student_tuples, key= lambda student: student[2])print stusstus = sorted(student_tuples, key=itemgetter(2))print stusstus = sorted(student_tuples, key=itemgetter(1, 2))print stus