Sorted Word frequency count using python

Question

I have to count the word frequency in a text using python. I thought of keeping words in a dictionary and having a count for each of these words.

Now if I have to so

Answer 1

I have just wrote a similar program, with the help of Stack Overflow guys:

from string import punctuation
from operator import itemgetter

N = 100
words = {}

words_gen = (word.strip(punctuation).lower() for line in open("poi_run.txt")
                                             for word in line.split())

for word in words_gen:
    words[word] = words.get(word, 0) + 1

top_words = sorted(words.items(), key=itemgetter(1), reverse=True)[:N]

for word, frequency in top_words:
    print ("%s %d" % (word, frequency))