Using correct syntax

Author: evaherrada

adafruit_lifx.py

@@ -79,8 +79,8 @@ def _parse_resp(response):
         try:
             for res in response.json()["results"]:
                 return res["status"]
-        except KeyError:
-            raise KeyError(response.json()["error"]) from KeyError
+        except KeyError as e:
+            raise KeyError(response.json()["error"]) from e
 
     # HTTP Requests
     def _post(self, path, data):