Fix SquareSet.issuperset() typing

niklasf · niklasf · commit 5257e72f2772 · 2019-03-27T16:36:23.000+01:00
diff --git a/chess/__init__.py b/chess/__init__.py
@@ -3607,7 +3607,7 @@ def issubset(self, other):
 
     def issuperset(self, other):
         """Test if this square set is a superset of another."""
-        return not bool(self & ~other)
+        return not bool(self & ~SquareSet(other))
 
     def union(self, other):
         return self | other
