Use deepcopy on cached boards

niklasf · Dec 23, 2014 · 6203406 · 6203406
1 parent b5b8beb
commit 6203406
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/chess/pgn.py b/chess/pgn.py
@@ -81,6 +81,7 @@ def __init__(self):
         self.starting_comment = ""
         self.comment = ""
         self.variations = []
+
         self.board_cached = None
 
     def board(self):
@@ -89,12 +90,11 @@ def board(self):
 
         It's a copy, so modifying the board will not alter the game.
         """
-
         if not self.board_cached:
             self.board_cached = self.parent.board()
             self.board_cached.push(self.move)
-        
-        return copy.copy(self.board_cached)
+
+        return copy.deepcopy(self.board_cached)
 
     def san(self):
         """