Change variable name to err

Author: evaherrada

adafruit_hue.py

@@ -115,11 +115,11 @@ def discover_bridge(self):
             json_data = resp.json()
             bridge_ip = json_data[0]["internalipaddress"]
             resp.close()
-        except Exception as e:
+        except Exception as err:
             raise TypeError(
                 "Ensure the Philips Bridge and CircuitPython device\
                              are both on the same WiFi network."
-            ) from e
+            ) from err
         self._ip = bridge_ip
         # set up hue bridge address path
         self._bridge_url = "http://{}/api".format(self._ip)