[Python]-Reddit Poster Script

#Script Process :
#logs in
#grabs data from text file
#begin loop (restarts from here for every line in the text file)
#posts data
#waits for 10 mins to prevent ban/captcha/error (if you post spam you'll get banned anyway)
#goes back to step 3 (begin loop) until it has completed this for every line in the text file.
#When it has ran through the loop for every line in the text file, the script will finish.

#Please see flags to learn how to use it, or run with the '-h' flag to display help.


#dependencies :
#python3
#argparse
#praw

#useage example :
#ex1: reddit.py -u "username" -p "password"
#ex2: reddit.py -u "username" -p "password" -f "filepath.txt" -t 600 -sub "Pics"

#flags explained :
#-u = username - default=None
#-p = password - default = None
#-f = filename or path to file - default = 'reddit_posts.txt'
#-t = timer value in seconds - default = 600 (10 mins)
#-sub = subreddit to post - default = Pics
#-s = line separator (IE '|' or ':') - default = '|'

#How to use :
#make a plain text file formatted like this :
#post_title | url_to_post

#launch script

#if confused, launch the script with the '-h' flag
#-----------------------------------------------------#

#!/usr/bin/python3

import argparse,praw,time

parser = argparse.ArgumentParser()
parser.add_argument('-u','--username',help='reddit.com username',type=str)
parser.add_argument('-p','--password',help='reddit.com password',type=str)
parser.add_argument('-f','--filename',help='file containing data to be posted',type=str,default='reddit_posts.txt')
parser.add_argument('-s','--spacer',help='character to seperate title|url inside text file',type=str,default='|')
parser.add_argument('-t','--timer',help='amount of time to wait between posts (in seconds)',type=int,default=600)
parser.add_argument('-sub','--subreddit',help='subreddit to post too',type=str,default='Pics')
args = parser.parse_args()

def post(title,post_url):
    if r.is_logged_in() == True:
        print("logged in successfully")
        r.submit(args.subreddit,title,text=None,url=post_url)
    else:
        print('login failed, aborting...')
        exit()

if __name__ == '__main__':
    if args.username =='' or args.password == '':
        print("please try using the '-h' flag to understand this script better")
        print('no username/password given, aborting...')
        exit()
    with open(args.filename) as f:
        r = praw.Reddit(user_agent='Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36')
        r.login(args.username, args.password,disable_warning=True)
        for line in f.read().splitlines():
            combo = line.split(args.spacer)
            title = combo[0]
            post_url = combo[1]
            try:
                print('posting : {} - {}'.format(title, post_url))
                post(title,post_url)
                print('posted : {} - {}'.format(title,post_url))
                time.sleep(args.timer)
            except Exception as e:
                print(e)
                break