1.RandSeq

#coding:utf-8#!/usr/bin/env python'randSeq.py -- 迭代'#从random模块里仅仅导入choice方法from random import choice	class RandSeq(object):	def __init__(self,seq):		self.data = seq;			def __iter__(self):		return self;		def next(self):		return choice(self.data)		if __name__ == '__main__':	for eachItem in RandSeq(('rock','paper','scisc')):		print eachItem