correct error in python_tool and duckduckgo_tool

app.py

@@ -46,13 +46,13 @@ wikipedia_tool = Tool(
 
 duckduckgo_tool = Tool(
     name = "Duckduckgo Internet Search",
-    func = Python_REPL.run,
+    func = Netsearch.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 = Python_REPL.run,
     description = "Useful when you need python to answer questions. You should input python code."    
 )