title: I am trying to get only the value of a field in firestore using python but it returns a key value pair instead
body: <p>I am linking my application with cloude firestore and I am using python for it and I need to retrive the value "Balance" field for checking if it is valid. but when I try to retrieve it I get  outputs like this</p>
  
  <pre><code>{ Balance: 80 }
  </code></pre>
  
  <p>But I need only the integer/float value of the balance.
  My code is as follows-</p>
  
  <pre><code>import firebase_admin
  from firebase_admin import credentials
  from firebase_admin import firestore
  
  # Use the application default credentials
  cred = credentials.Certificate("/Users/admin/Downloads/serviceAccountKey.json")
  firebase_admin.initialize_app(cred)
  
  db = firestore.client()
  user_id= 'my user id in database'
  u = 80
  userbal_new= u-10
  users_ref = db.collection(u'users').document(user_id)
  
  #update balance
  #users_ref.update({u'Balance': userbal_new})
  
  #get balance
  get_bal= users_ref.get({u'Balance'})
  bal = u'{}'.format(get_bal.to_dict())
  print (bal)
  </code></pre>