'''
Created on Nov 16, 2015

@author: ola
'''
import csv
import operator

f = open("top1000.csv",'rbU')
data = {}
for d in csv.reader(f,delimiter=',',quotechar='"'):
    artist = d[2]
    song = d[1]
    if not artist in data:
        data[artist] = 0
    data[artist] += 1

itemlist = data.items()
selected = sorted(itemlist,key=operator.itemgetter(1),reverse=True)
print selected[:30]