Generating random text with english words

random_gen.py

import requests
import random
import sys
#Pass the number of lines as the first arguument to the program
n_lines = int(sys.argv[1])
words_low = 10
words_high = 20
word_site = "http://svnweb.freebsd.org/csrg/share/dict/words?view=co&content-type=text/plain"
f = open("random_data.txt",'w+')
response = requests.get(word_site)
WORDS = response.content.splitlines()
print len(WORDS)
for i in range(0,n_lines):
    string = ''
    for j in range(0, random.randint(words_low,words_high)):
        string += " " + WORDS[random.randint(0,len(WORDS)-1)]
    string += " \n"
    print string
    f.write(string)
f.close()