Dead simple subreddit subscriber count retriever

subreddit_subscriber_count.py

from typing import Callable

from time import sleep
from datetime import datetime
from urllib.request import urlopen
import json

def strict_input(print_str: str, input_check: Callable[[str], bool]) -> str:
	while True:
		temp = input(print_str)
		try:
			if input_check(temp):
				return temp
			print(f"Incorrect input.")
		except Exception as e:
			print(f"Cannot parse {temp}: {e}")

def main():
	try:
		subreddit = strict_input("Enter the subreddit's name: ", lambda s: len(s) > 0)
		full_url = f"https://old.reddit.com/r/{subreddit}/about.json"
		print(f"Sub count for r/{subreddit}")
		while True:
			try:
				response = urlopen(full_url).read()
				json_resp = json.loads(response)
				print(f"""{datetime.now()} --> {json_resp["data"]["subscribers"]}""")
			except Exception as e:
				print(f"Error --> {e}")
			# Subscriber counts for subreddits don't change very often
			# Once per minute is more than enough
			sleep(60)
	except KeyboardInterrupt:
		print("Exiting script")


if __name__ == "__main__":
	main()