xrange:
与range类似,不过性能更高,因为它不会在内存里面创建列表的完整拷贝。
a = [x for x in xrange(10)] print a
soted:
将列表的元素进行排序
x = ['dog','cat','pig'] print sorted(x)
reversed:
将列表反转顺序,返回迭代器
xx = ['a','b','c','d','e'] for x in reversed(xx): print x
enumerate:
返回列表的序号
xx = ['a','b','c','d','e'] for x,y in enumerate(xx): print x,y