Specify exception type

DataAnalyser.py

@@ -134,7 +134,7 @@ class DataAnalyser(DataHandler):
                 weatherRaw = tableRow.find("td").string
                 return re.sub("\n", "", tableRow.find("td").string)
 
-        raise Exception("No weather entry found") # TODO: Use correct exception type
+        raise KeyError("No weather entry found")
 
     def filterForRainSessions(self, sessions: list[Session]):
         """