Update app.py

app.py

@@ -49,16 +49,16 @@ def generate_surfer_image(next_tide: str) -> str:
 @tool
 def display_image_tool(image: Union[Image.Image, str]) -> None:
     """
-    A tool that displays an image correctly in different formats.
+    Display an image in different formats.
 
     Args:
-        image (Union[PIL.Image.Image, str]): 
-            - A PIL Image object
-            - A URL string (starting with "http")
-            - A Base64-encoded image string (starting with "data:image")
-
+        image: The image to display. It can be a PIL Image object; a URL string (starting with "http"), a Base64-encoded image string (starting with "data:image").
     Returns:
-        None. Displays the image in the notebook or script.
+        None: The function does not return anything. It displays the image in the notebook or script.
+    
+    Raises:
+        ValueError: If the string format is not a valid image URL or Base64 string.
+        TypeError: If the input is not a PIL Image or a string.
     """
     if isinstance(image, Image.Image):
         # If it's a PIL Image, display it directly