Update app.py

app.py

@@ -36,8 +36,7 @@ class WikipediaSearchTool(Tool):
         super().__init__()
         self.searcher = WikipediaSearcher()
 
-    def __call__(self, inputs: dict) -> str:
-        query = inputs.get("query", "")
+    def forward(self, query: str) -> str:
         return self.searcher.search(query)
 
 wikipedia_search_tool = WikipediaSearchTool()