#Sorting basic: >>> print sorted([5, 2, 3, 1, 4]) [1, 2, 3, 4, 5] >>> L = [5, 2, 3, 1, 4] >>> L.sort() >>> print L [1, 2, 3, 4, 5] #Sorting cmp: >>>L = [('b',2),('a',1),('c',3),('d',4)] >>>print sorted(L, cmp=lambda x,y:cmp(x[1],y[1])) [('a', 1), ('b', 2), ('c', 3), ('d', 4)] #Sorting keys: >>>L = [('b',2),('a',1),('c',3),('d',4)] >>>print sorted(L, key=lambda x:x[1])) [('a', 1), ('b', 2), ('c', 3), ('d', 4)] #Sorting reverse: >>> print sorted([5, 2, 3, 1, 4], reverse=True) [5, 4, 3, 2, 1] >>> print sorted([5, 2, 3, 1, 4], reverse=False) [1, 2, 3, 4, 5] #注:效率key>cmp(key比cmp快)