allow passing EmptyEmbed to set_image and set_thumbnail

discord/embeds.py

@@ -276,15 +276,21 @@ class Embed:
         This function returns the class instance to allow for fluent-style
         chaining.
 
+        .. versionchanged:: 1.4
+            Passing :attr:`Empty` removes the image.
+
         Parameters
         -----------
         url: :class:`str`
             The source URL for the image. Only HTTP(S) is supported.
         """
 
-        self._image = {
-            'url': str(url)
-        }
+        if url is EmptyEmbed:
+            del self._image
+        else:
+            self._image = {
+                'url': str(url)
+            }
 
         return self
 
@@ -309,15 +315,21 @@ class Embed:
         This function returns the class instance to allow for fluent-style
         chaining.
 
+        .. versionchanged:: 1.4
+            Passing :attr:`Empty` removes the thumbnail.
+
         Parameters
         -----------
         url: :class:`str`
             The source URL for the thumbnail. Only HTTP(S) is supported.
         """
 
-        self._thumbnail = {
-            'url': str(url)
-        }
+        if url is EmptyEmbed:
+            del self._thumbnail
+        else:
+            self._thumbnail = {
+                'url': str(url)
+            }
 
         return self