Merge pull request #1 from jaks6/patch-1

Fix bug with type param for "devices" query

cumulocitypython/connection.py

@@ -173,7 +173,7 @@ def get_events(self, date_from=None, date_to=None, device_id=None, event_type=No
             return pd.DataFrame([self.__flatten(e) for e in data])
 
         def get_devices(self, device_type=None, fragment_type=None, ids=None, text=None, query=None, page_size=2000):
-            device_type_param = "&deviceType=%s" % device_type if device_type else ""
+            device_type_param = "&type=%s" % device_type if device_type else ""
             fragment_type_param = "&fragmentType=%s" % fragment_type if fragment_type else ""
             ids_param = "&ids=%s" % ",".join([str(i) for i in ids]) if ids else ""
             query_param = "&query=%s" % query if query else ""
@@ -184,4 +184,4 @@ def get_devices(self, device_type=None, fragment_type=None, ids=None, text=None,
             data = self.__fetch_all_data_pages(request_url, "managedObjects", "devices")
 
             #flatten multi level json structure to one dimension dictionary
-            return pd.DataFrame([self.__flatten(m) for m in data])
+            return pd.DataFrame([self.__flatten(m) for m in data])