applied black formatter

Author: anna-ayn

openlibrary/core/models.py

@@ -87,12 +87,13 @@ def width(self):
         """Get the width of the image."""
         info = self.info()
         return info["width"] if info else None
-    
+
     def height(self):
         """Get the height of the image."""
         info = self.info()
         return info["height"] if info else None
 
+
 ThingKey = str