Use -1 instead of None as invalid pocket._pieces

niklasf · Jun 11, 2022 · 0d90b5b · 0d90b5b
1 parent 4376eb7
commit 0d90b5b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/chess/variant.py b/chess/variant.py
@@ -835,7 +835,7 @@ def __init__(self, symbols: Iterable[str] = "") -> None:
 
     def reset(self) -> None:
         """Clears the pocket."""
-        self._pieces = [None, 0, 0, 0, 0, 0, 0]
+        self._pieces = [-1, 0, 0, 0, 0, 0, 0]
 
     def add(self, piece_type: chess.PieceType) -> None:
         """Adds a piece of the given type to this pocket."""