Update app.py

app.py

@@ -9,22 +9,21 @@ from Gradio_UI import GradioUI
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def calculator(x: int | float, y: int | float, operation: str)-> int | float: #it's import to specify the return type
-    #Keep this format for the description / args / args description but feel free to modify the tool
+def calculator(x: int | float, y: int | float, operation: str)-> str:
     """A tool that performs an operation between x and y.
     Args:
-        x: first integer or float in the calculation
-        y: second integer or float in the calculation
-        operation: one of ["+", "-", "*", "/"]
+        x: first integer or float in the calculation.
+        y: second integer or float in the calculation.
+        operation: one of ["+", "-", "*", "/"].
     """
     if operation == "+":
-        return x + y
+        return str(f"{x}+{y} = {x+y}")
     elif operation == "-":
-        return x - y
+        return str(f"{x}-{y} = {x-y}")
     elif operation == "*":
-        return x * y
+        return str(f"{x}*{y} = {x*y}")
     elif operation == "/":
-        return x / y
+        return str(f"{x}/{y} = {x/y}")
     else:
         raise ValueError("operation must be one of ['+', '-', '*', '/']")