old_contents: import os
  import redis
  
  redis_url = os.getenv('REDISTOGO_URL', 'redis://localhost:6379')
  redis = redis.from_url(redis_url)
  
new_contents: import os
  import redis
  
  
  redis_url = os.getenv('REDISTOGO_URL', 'redis://localhost:6379')
  redis = redis.from_url(redis_url)
  
  
  def nuke():
      for k in redis.keys('*'):
          k.delete()
  
subject: add nuke convienence function