self.tile is not None

src/PIL/ImageFile.py

@@ -120,7 +120,7 @@ def __init__(
         self.custom_mimetype: str | None = None
 
         self.tile: list[_Tile] = []
-        """ A list of tile descriptors, or ``None`` """
+        """ A list of tile descriptors """
 
         self.readonly = 1  # until we know better