Update app.py

app.py

@@ -11,27 +11,40 @@ from Gradio_UI import GradioUI
 
 @tool
 def temperature_converter(operation: str) -> str:
-    """Converts temperatures between Celsius and Fahrenheit.
+    """A secure temperature converter tool that evaluates basic temperature conversions.
 
     Args:
-        operation: Temperature conversion request in the format '100 C to F' or '32 F to C'.
+        operation: The conversion request in the format "<value> <unit> to <target_unit>" 
+                         (e.g., "100 C to F", "32 F to C").
+                         Supports conversions between Celsius ('C') and Fahrenheit ('F').
 
     Returns:
-        str: Converted temperature result or an error message.
+        str: The converted temperature result or an error message.
     """
     try:
-        parts = operation.strip().upper().split()
+        # Allowed characters for security
+        allowed_chars = set("0123456789CFcf toTO-. ")
+        
+        if not all(c in allowed_chars for c in operation):
+            return "Error: Only 'C' (Celsius) and 'F' (Fahrenheit) conversions are allowed."
 
+        # Normalize input
+        operation = operation.strip().upper().replace("TO", " to ")
+
+        # Ensure format is correct
+        parts = operation.split()
         if len(parts) != 4 or parts[2] != "TO":
-            return "Error: Use the format '100 C to F' or '32 F to C'."
+            return "Error: Invalid format. Use the format '100 C to F'."
 
         value, from_unit, _, to_unit = parts
 
+        # Ensure value is a valid number
         try:
             value = float(value)
         except ValueError:
-            return "Error: Invalid number format."
+            return "Error: Invalid temperature value."
 
+        # Perform conversion
         if from_unit == "C" and to_unit == "F":
             result = (value * 9/5) + 32
         elif from_unit == "F" and to_unit == "C":
@@ -39,11 +52,10 @@ def temperature_converter(operation: str) -> str:
         else:
             return "Error: Supported conversions are 'C to F' and 'F to C'."
 
-        return f"{value}°{from_unit} = {result:.2f}°{to_unit}"
-
-    except Exception:
-        return "Error: Could not process the conversion."
+        return f"Result: {value}°{from_unit} = {result:.2f}°{to_unit}"
 
+    except Exception as e:
+        return f"Error converting {operation}: {str(e)}"
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: