Reddit bot to follow /u/marktaylorofficial and thank him for his contribution

tubbybot.py

#!/usr/bin/python
import praw
print "Tubby bot v0.1 by Jake"
print "======================\n"
print "Initialising praw reddit object"
r = praw.Reddit(user_agent="Tubby bot by Jake")
print "Logging in as tubby-bot"
r.login("tubby-bot")
print "Getting overview from /u/marktaylorofficial"
user = r.get_redditor("marktaylorofficial")
users = []
print "Getting comments"
comments = user.get_comments()
comment = next(comments)
while True:
	try:
		print "\nCurrent comment:",
		print comment
		for reply in comment.replies:
			users.append(reply.author.name)
		if "tubby-bot" not in users:
			print "Untouched comment. Replying now."
			comment.reply("Thanks Tubbs")
		else:
			print "Already replied to this comment. Stopping now."
			break
		comment = next(comments)
		users = []
	except Exception as e:
		if str(e) == "": #If we run past all available comments, an empty exception is thrown
			print "\nReplied to all comments. Stopping now."
		else:
			print e
		break

what is this XD