Handle 429 status code in response gracefully.

Author: m-aciek

hyperwallet/utils/apiclient.py

@@ -112,6 +112,13 @@ def _makeRequest(self,
 
         if response.status_code is 204:
             return {}
+        elif response.status_code is 429:
+            raise HyperwalletAPIException({
+                'errors': [{
+                    'code': 'TOO_MANY_REQUESTS',
+                    'message': 'Too many requests sent in a given amount of time.'
+                }]
+            })
 
         self.__checkResponseHeaderContentType(response)