reading image data from input URL

meme_otron/meme_otron.py

@@ -72,14 +72,17 @@ def compute_part(*args: str, input_data: Optional[bytes] = None,
         if input_data is None or len(input_data) == 0:
             if len(args) <= 1:
                 return None, 'Image: received no input data nor URL'
+            elif not utils.validate_url(args[1]):
+                return None, 'Image: invalid URL format'
             else:
-                return None, 'Image: URL mode not yet implemented'
+                input_data = utils.read_web(args[1])
+                if input_data is None:
+                    return None, 'Image: could not reach URL'
+        img = img_factory.build_image_only(input_data)
+        if img is None:
+            return None, 'Image: invalid image format'
         else:
-            img = img_factory.build_image_only(input_data)
-            if img is None:
-                return None, 'Image: invalid image format'
-            else:
-                return img, None
+            return img, None
     else:
         meme = meme_db.get_meme(meme_id)
         if meme is None: