Weather: weather conditions readability fixes

* bold (^B) city name, condition elements
* replace 32F and 32 F with 32°F

modules/Weather.py

@@ -130,7 +130,7 @@ class Weather(Module):
         else:
             try:
                 location = current['display_location']['full']
-                reply = "Conditions for {0:s}: ".format(location)
+                reply = "Conditions for {0:s}: ".format(location)
 
                 weather_str = current['weather']
                 if weather_str != '':
@@ -158,41 +158,41 @@ class Weather(Module):
 
                 humidity_str = current['relative_humidity']
                 if humidity_str != '':
-                    reply += "Humidity: {0:s}. ".format(humidity_str)
+                    reply += "Humidity: {0:s}. ".format(humidity_str)
 
                 wind_str = current['wind_string']
                 if wind_str != '':
-                    reply += "Wind: {0:s}. ".format(wind_str)
+                    reply += "Wind: {0:s}. ".format(wind_str)
 
                 pressure_in = current['pressure_in']
                 pressure_trend = current['pressure_trend']
                 if pressure_in != '':
-                    reply += "Pressure: {0:s}\"".format(pressure_in)
+                    reply += "Pressure: {0:s}\"".format(pressure_in)
                     if pressure_trend != '':
                         reply += " and {0:s}".format("dropping" if pressure_trend == '-' else "rising")
                     reply += ". "
 
                 heat_index_str = current['heat_index_string']
                 if heat_index_str != '' and heat_index_str != 'NA':
-                    reply += "Heat index: {0:s}. ".format(heat_index_str)
+                    reply += "Heat index: {0:s}. ".format(heat_index_str)
 
                 windchill_str = current['windchill_string']
                 if windchill_str != '' and windchill_str != 'NA':
-                    reply += "Wind chill: {0:s}. ".format(windchill_str)
+                    reply += "Wind chill: {0:s}. ".format(windchill_str)
 
                 visibility_mi = current['visibility_mi']
                 if visibility_mi != '':
-                    reply += "Visibility: {0:s} miles. ".format(visibility_mi)
+                    reply += "Visibility: {0:s} miles. ".format(visibility_mi)
 
                 precip_in = current['precip_today_in']
                 if precip_in != '':
-                    reply += "Precipitation today: {0:s}\". ".format(precip_in)
+                    reply += "Precipitation today: {0:s}\". ".format(precip_in)
 
                 observation_time = current['observation_time']
                 if observation_time != '':
                     reply += "{0:s}. ".format(observation_time)
 
-                return reply.rstrip()
+                return self._prettify_weather_strings(reply.rstrip())
             except KeyError as e:
                 self.log.error("error or unexpected results in conditions reply")
                 self.log.exception(e)
@@ -217,5 +217,18 @@ class Weather(Module):
 
         return api_key
 
+    def _prettify_weather_strings(self, weather_str):
+        """
+        Clean up output strings.
+
+        For example, turn 32F into 32°F in input string.
+
+        Input:
+            weather_str --- the string to clean up
+
+        """
+
+        return re.sub(r'(\d+)\s*([FC])', r'\1°\2', weather_str)
+
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