次の形式でネストされた辞書を作成しようとしています。
{person1:
         {tweet1 that person1 wrote: times that tweet was retweeted},
         {tweet2 that person1 wrote: times that tweet was retweeted},
 person2:
         {tweet1 that person2 wrote: times that tweet was retweeted},...
 }
次のデータ構造から作成しようとしています。以下は、実際のものの切り捨てられたバージョンです。
 rt_sources =[u'SaleskyKATU', u'johnfaye', u'@anisabartes']
 retweets = [[], 
  [u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT',u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT', u'Stay safe #nyc #sandy http://t.co/TisObxxT'], []]
 annotated_retweets = {u'Stay safe #nyc #sandy http://t.co/TisObxxT':26}
 ''' 
     Key is a tweet from set(retweets) 
     Value is how frequency of each key in retweets
 '''
 for_Nick = {person:dict(tweet_record,[annotated_tweets[tr] for tr in tweet_record]) 
                                    for person,tweet_record in zip(rt_sources,retweets)}