Reddit 24 hour post limit script

import praw
import time
from datetime import datetime, timedelta

def hours_posted(submission):
	"""Gets the time that passed (in hours) from when the post was made. (All time is converted to UTC)"""
	time_created = submission.created_utc
	current_time = datetime.utcnow()
	time_posted = datetime.utcfromtimestamp(time_created)
	time_difference_in_hours = (current_time - time_posted)/timedelta(hours=1)
	return time_difference_in_hours

def post_made_today_check(user, link):
	""" Returns true if the user who just posted, has already made a previous post within the past 24 hours
		Returns false otherwise"""

	reddit = praw.Reddit(client_id='',
				client_secret= '',
				user_agent='')

	subreddit = reddit.subreddit('')
	submissions = subreddit.new(limit=50) #Change limit accordingly (max 1000)

	for submission in submissions:
		if link == submission.permalink:	# Ignores the post we are checking
			continue
		#If a post has been made in the past 24 hours by the same user, return true
		if user == submission.author.name and hours_posted(submission) < 24:
			return True

	return False

if __name__ == "__main__":


	reddit = praw.Reddit(client_id='',
					client_secret= '',
					user_agent='',
					username='',
					password=''))

	subreddit = reddit.subreddit('') #Enter
	submissions = subreddit.new(limit=50) #Change limit accordingly (max 1000)
	multi_posts_today = False

	for submission in submissions:
		multi_posts_today = post_made_today_check(submission.author.name, submission.permalink)
		if multi_posts_today == True:
			submission.reply("Enter Reply Here") #replys to post
			submission.mod.remove() #Deletes the post
		break