Reddit Bot broken code

__author__ = 'Nolan'

import praw
import pprint
import sys

username = "x"
password = "x"
user_agent = 'Test Script by /u/LovingThatPlaid'
r = praw.Reddit(user_agent=user_agent)

def logged_in_notification():
    global username
    global password
    r.login(username, password)
    if r.is_logged_in() == True:
        print("Logged in as LovingThatPlaid...")

logged_in_notification()

searched_user = input("What user would you like to search?: ")
user = r.get_redditor(searched_user)

thing_limit = input("How many of their comments would you like to parse?: ")

while True:
    if type(thing_limit) == int:
        print("That is a number, thanks.")
        break
    elif type(thing_limit) == float:
        print("You need a whole number.")
        sys.exit()
    elif type(thing_limit) == str:
        print("You need a whole number.")
        sys.exit()
    else:
        print("That is a number, thanks.")
        break


karma_by_subreddit = {}
gen = user.get_submitted(limit=thing_limit)
for thing in gen:
    subreddit = thing.subreddit.display_name
    karma_by_subreddit[subreddit] = (karma_by_subreddit.get(subreddit, 0)
                                   + thing.score)

pprint.pprint(karma_by_subreddit)