Created Game object

chess.py

@@ -0,0 +1,39 @@
+def cross(A, B):
+    return tuple(a+b for a in A for b in B)
+
+ranks   = "12345678"
+files   = "abcdefgh"
+squares = cross(files, ranks)
+
+pawn_ranks = "27"
+home_ranks = "18"
+init_positions = {"pawn"   : cross(files, pawn_ranks),
+                  "rook"   : cross("ah",  home_ranks),
+                  "knight" : cross("bg",  home_ranks),
+                  "bishop" : cross("cf",  home_ranks),
+                  "queen"  : cross("d",   home_ranks),
+                  "king"   : cross("e",   home_ranks)
+                 }
+class Game:
+    def __init__(self):
+        self.make_board()
+
+    def make_board(self):
+        self.board = dict((sq, None) for sq in squares)
+        # Add pieces
+        for piece, positions in init_positions.items():
+            for sq in positions:
+                self.board[sq] = piece
+        # Add colors
+        for sq in cross(files, "12"):
+            self.board[sq] = ("white", self.board[sq])
+        for sq in cross(files, "78"):
+            self.board[sq] = ("black", self.board[sq])
+
+def test():
+    game = Game()
+    assert len(squares) == 8**2
+    assert sum(map(len, init_positions.values())) == 8*4
+
+test()
+