From 90449a90f1360f580b0a9d476c6d99cd1f182290 Mon Sep 17 00:00:00 2001
From: "Teagan M. Glenn" <that@teagantotally.rocks>
Date: Thu, 18 Aug 2016 10:46:24 -0600
Subject: [PATCH] Use string templating

---
 homeassistant/components/sensor/wunderground.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/homeassistant/components/sensor/wunderground.py b/homeassistant/components/sensor/wunderground.py
index 00e5fdb3e1d..e4fa30cabe3 100644
--- a/homeassistant/components/sensor/wunderground.py
+++ b/homeassistant/components/sensor/wunderground.py
@@ -138,7 +138,7 @@ class WUndergroundData(object):
     def _build_url(self):
         url = _RESOURCE.format(self._api_key)
         if self._pws_id:
-            url = url + 'pws:' + self._pws_id
+            url = url + 'pws:{}'.format(self._pws_id)
         else:
             url = url + '{},{}'.format(self._latitude, self._longitude)