Accepted answers for tags

accepted_tags.py

from __future__ import division
from collections import defaultdict

accepted_answers_for_tags = defaultdict(int)
count = 0
for key in question_details.iterkeys():
    if question_details[key]['acceptedId']:
        for t in question_details[key]['tags']:
            accepted_answers_for_tags[t] += 1

percentages = []
for key, value in  dict(sorted(accepted_answers_for_tags.iteritems(), key = lambda x: x[1], reverse = True)[:20]).iteritems():
    percentages.append((key, tags_dict[key], (value/tags_dict[key])*100))
print sorted(percentages, key = lambda x: x[2], reverse = True)