title: How to send a dictionary through params webapp2 python?
body: <p>I have a dictionary in Swift like so:</p>
  
  <p><code>let params : [String : Any] =</code></p>
  
  <p><code>["user_key": "ag1kZXZ-Z29hbC1yaXNlchELEgRVc2VyGICAgICAgIAKDA", 
   "post_text": "Lol", 
   "trip": ["posted_by": "", 
           "endAddress": "", 
           "post_text": "Lol", 
           "startAddress": ["state": "IL", 
                            "city": "Oak Park", 
                            "address1": "6503 West North Avenue", 
                            "address2": "", "zipCode": ""], 
           "time": "", 
           "role": "", 
           "eta": ""]]</code></p>
  
  <p>When I send this in the params object of Alamofire, the webapp2 accesses the params by <code>self.request.get('user_key')</code> and so forth, however, it does not get the 'trip' parameter. ```self.request.get('trip') returns nothing. </p>
  
  <p>How do I send this dictionary to webapp2 Request Handler?</p>