#!/usr/bin/env python
# -*- coding: utf-8 -*-

import operator, re, sqlite3

def getTweets(database_filename = "Database.db"):
 sql_conn = sqlite3.connect(database_filename)
 cur = sql_conn.cursor()
 
 handles = dict()
 tweets = cur.execute("SELECT text FROM tweets")
 
 for tweet in tweets:
  for word in tweet[0].split():
   if word[0] == "@":
    handle = "@" + re.split('[\\W]',word[1:])[0].lower()
    if handle != "@":
     try:
      handles[handle] += 1
     except KeyError:
      handles[handle] = 1

 return handles

if __name__ == "__main__":
 data = sorted(getTweets().items(), key=operator.itemgetter(1), reverse=True)
 for handle, tweets in data:
  print handle + "," + str(tweets)