An example of a function that tests if a connection to Redis can be established.

test_connection_to_redis.py

import os
import redis

def can_connect_to_redis():
  if not os.environ.get('REDIS_URL'):
    return False
  try:
    conn = redis.from_url(os.environ.get('REDIS_URL'))
    conn.ping()
    return True
  except redis.ConnectionError:
    return False