python里对list中的整数求平均并排序

#! /usr/bin python#coding:utf-8from __future__ import division   #实现精确的除法，例如4/3=1.333333import randomdef make_score(num):  score = [random.randint(0,100) for i in range(num)]  return scoredef less_average(score):  num = len(score)  sum_score = sum(score)  ave_num = sum_score/num  less_ave = [i for i in score if i<ave_num]  return len(less_ave)if __name__=="__main__":  score = make_score(40)  print "the number of less average is:",less_average(score)  print "the every socre is[from big to small]:",sorted(score,reverse=True)