Reddit list Subreddits

reddit-list-subs.py

#!/usr/bin/env python3
# Download a list of subscribed subreddits
# Since this program uses stderr incoke it like this to store subs to file:
#
# reddit-list-subs > subs.lst

import getpass
import praw
import sys

from prawcore.exceptions import OAuthException


def eprint(*args, **kwargs):
    print(*args, file=sys.stderr, **kwargs)


def einput(prompt=None):
    if prompt:
        sys.stderr.write(str(prompt))
    return input()

def reddit_auth(client_id, client_secret, username, password):
    reddit = praw.Reddit(
        client_id=client_id,
        client_secret=client_secret,
        user_agent="list_subs",
        username=username,
        password=password,
    )
    return reddit


def reddit_subs(reddit):
    subs = sorted([sub.display_name for sub in reddit.user.subreddits(limit=None)], key=lambda v: v.upper())
    return subs


if __name__ == '__main__':
    # Adapt these two values, following this guide:
    # https://praw.readthedocs.io/en/stable/getting_started/configuration/options.html#oauth-configuration-options
    client_id = 'YOU_HAVE_TO_ADAPT_THIS_GET_IT_FROM_THE_WEBSITE_ABOVE'
    client_secret = 'YOU_HAVE_TO_ADAPT_THIS_GET_IT_FROM_THE_WEBSITE_ABOVE'
    # Ask for credentials on stderr
    eprint("Enter Reddit credentials for processing...")
    username = einput("Username: ")
    password = getpass.getpass("Password: ", sys.stderr)
    reddit = reddit_auth(client_id, client_secret, username, password)
    try:
        subs = reddit_subs(reddit)
    except:
        eprint("Wrong credentials!")
        sys.exit(1)
    for sub in subs:
        print(sub)