Remove docs for bach_or_stravinsky alias

Author: alexanderthclark

freeride/games.py

@@ -386,6 +386,25 @@ def battle_of_the_sexes(cls) -> "Game":
             action_names=(("Opera", "Boxing Match"), ("Opera", "Boxing Match")),
         )
 
+    @classmethod
+    def bach_or_stravinsky(cls) -> "Game":
+        """Return the Bach or Stravinsky coordination game.
+
+        This is identical to :meth:`battle_of_the_sexes` but labels the
+        actions as ``Bach`` and ``Stravinsky``.
+        """
+
+        p1 = [[2, 0], [0, 1]]
+        p2 = [[1, 0], [0, 2]]
+        return cls(
+            p1,
+            p2,
+            action_names=(
+                ("Bach", "Stravinsky"),
+                ("Bach", "Stravinsky"),
+            ),
+        )
+
     @classmethod
     def pure_coordination(cls) -> "Game":
         """Return a simple pure coordination game."""

tests/test_games.py

@@ -108,6 +108,14 @@ def test_class_helpers(self):
             (("Opera", "Boxing Match"), ("Opera", "Boxing Match")),
         )
 
+        bos_alt = Game.bach_or_stravinsky()
+        self.assertEqual(bos_alt.payoffs1.tolist(), [[2, 0], [0, 1]])
+        self.assertEqual(bos_alt.payoffs2.tolist(), [[1, 0], [0, 2]])
+        self.assertEqual(
+            bos_alt.action_names,
+            (("Bach", "Stravinsky"), ("Bach", "Stravinsky")),
+        )
+
 
 if __name__ == '__main__':
     unittest.main()