correct run function

app.py

@@ -40,19 +40,19 @@ Python_REPL = PythonREPL()
 
 wikipedia_tool = Tool(
     name = "Wikipedia Search",
-    func = Wikipedia.run(),
+    func = Wikipedia.run,
     description = "Useful to search a topic, country or person when there is no availble information in vector database"
 )
 
 duckduckgo_tool = Tool(
     name = "Duckduckgo Internet Search",
-    func = Python_REPL.run(),
+    func = Python_REPL.run,
     description = "Useful to search information in internet when it is not available in other tools"    
 )
 
 python_tool = Tool(
     name = "Python REPL",
-    func = Netsearch.run(),
+    func = Netsearch.run,
     description = "Useful when you need python to answer questions. You should input python code."    
 )