ranking values wrt dictionary values in python -

i trying rank dictionary based on it's values. example:

score = {'178413': 0.0, '178414': 0.0}  

after operation should be

score = {'178413': 1.5, '178414': 1.5} 

i tried

    import scipy.stats ss     temp = ss.rankdata(score.values())     print temp     temp = [1.5 1.5]` 

so rank of score.values equal temp. want replace corresponding temp values in dictionary values placed can't seem place in dictionary.

**complete code tried **

so following way , placing in dictionary. feel it's not correct

import scipy.stats ss score = {'178413': 3, '178414': 0.0} inv_score = {y:x x,y in score.iteritems()} rank_val = ss.rankdata(score.values())  count = 0 in score.values():     id = inv_score[i]     score[id] = rank_val[count]     count += 1 

output : score = {'178413': 2.0, '178414': 1.0}

code fail if input score {'178413': 0.0, '178414': 0.0}