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#!/usr/bin/env python

# coding=utf-8

"""

count the examine scores

"""

from __future__ import division

def average_score(scores):

"""

count average score.

"""

score_values = scores.values()

sum_scores = sum(score_values)

average = sum_scores/len(score_values)

return average

def sorted_score(scores):

"""

count the list for max to min.

"""

score_lst = [(scores[k],k) for k in scores]

sort_lst = sorted(score_lst, reverse=True)

return [(i[1], i[0]) for i in sort_lst]

def max_score(scores):

"""

the max scroe and the person's name.

"""

lst = sorted_score(scores)

max_score = lst[0][1]

return [(i[0],i[1]) for i in lst if i[1]==max_score]

def min_score(scores):

"""

the min score and the person's name.

"""

lst = sorted_score(scores)

min_score = lst[len(lst)-1][1]

return [(i[0],i[1]) for i in lst if i[1]==min_score]

if __name__ == "__main__":

examine_scores = {"google":98, "facebook":99, "baidu":52, "alibaba":80, "yahoo":49, "IBM":70, "android":76, "apple":99, "amazon":99}

ave = average_score(examine_scores)

print "the average score is: ",ave

sor = sorted_score(examine_scores)

print "list of the scores: ",sor

xueba = max_score(examine_scores)

print "Xueba is: ",xueba

xuezha = min_score(examine_scores)

print "Xuzha is: ",xuezha