reddit_comment.py

from collections import Counter  
import re, praw
print "Fetching unimportant words..."
import nltk
nltk.download('stopwords')
from nltk.corpus import stopwords
c = Counter()
r = praw.Reddit(user_agent='praw')
username = 'username'
print "Logging in as",username
r.login(username,'password')
comments = r.get_redditor(username).get_comments(limit=None)

print "Fetching ALL your comments. This will take a while...."
stops = set(stopwords.words('english'))
reg = re.compile(r'([^\s\w]|_)+')
for i in comments:
    line = re.sub(reg,'',i.body)
    for word in line.split():
        word = word.lower()
        if word not in stops:
            c[word] +=1
for i in enumerate(c.most_common(100),1): # Leave out 100 if you want them all
    print i[0],i[1][0],i[1][1]