Reddit bot, please, help me.

import psycopg2
import praw
import time
import random


def random_post(records_data):
    rand_post = random.choice(records_data)
    return rand_post


def get_record():
    conn = psycopg2.connect("dbname='xxx' user='xxx' host='xxx' password='xxx'")
    cur = conn.cursor()

    cur.execute("SELECT * FROM xxx ORDER BY -id LIMIT 100")
    records = cur.fetchall()

    return records


def post(record):
    print(record)
    # praw variables
    reddit = praw.Reddit(client_id='your client id',
                         client_secret='your client secret',
                         user_agent='My_bot',
                         username='your username',
                         password='your pass!')

    subreddit = reddit.subreddit('your subreddit')
    
    # post name
    url = record[1]
    
    # for my website, I must modify url from database like this :
    url = url.replace(' ', '%20')
    url = 'https://xxx.com/video/' + url

    # subreddit.submit (post_name, url, resubmit=True/False, nsfw=True/False)
    my_post = subreddit.submit(record[1], url=url, resubmit=False, nsfw=True)


a = get_record()
b = random_post(a)
post(b)