Basic example of working with a CSV file.

working_with_csv.py

# -*- coding: utf-8 -*-
'''
Basic example of working with a CSV file.
'''
import csv
import collections

lis = []

with open("file.csv") as f:
    data = csv.reader(f)
    for line in data:
        lis.append(line[3])
        counter = collections.Counter(lis)

for word, value in counter.iteritems():
    print word, value