title: How can I get a key from the value in Firebase?
body: <p>My Firebase structure is as below.
  I'm using python to use firebase,
  and also I use Pyrebase.</p>
  
  <p>I want to get a key, which looks like '288xxxxxx'
  from the value(busStopName).
  Can I get the answer in Pyrebase?</p>
  
  <p>Thank you in advance...</p>
  
  <p><a href="https://i.stack.imgur.com/Or65e.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Or65e.png" alt="enter image description here"></a></p>