Python writing to file

Hi I am working on program to print of the unique words and frequency and I came upon the below code...only piece is that I need to write it to a file on my local drive...can someone help me thanks

import re
filename = 'C:\pythonscripts\comments.txt'
word_list = re.split('\s+', file(filename).read().lower())
print 'Words in text:', len(word_list)
freq_dic = {}

punctuation = re.compile(r'[.?!,":;]')
for word in word_list:

    word = punctuation.sub("", word)
    try:
        freq_dic[word] += 1
    except:
        freq_dic[word] = 1
print 'Unique words:', len(freq_dic)
freq_list = freq_dic.items()

freq_list.sort()

for word, freq in freq_list:
     print word, freq