connect: Follow flake8

Author: yunchih

exercises/connect/example.py

@@ -1,21 +1,21 @@
 
 class ConnectGame:
 
-    directions = [(0,1), (0,-1), (1,0), (-1,0), (1,-1), (-1,1)]
+    directions = [(0, 1), (0, -1), (1, 0), (-1, 0), (1, -1), (-1, 1)]
     white = "O"
     black = "X"
     none = ""
 
     def __init__(self, lines):
         self.board = self.make_board(lines)
-        assert(len(self.board) > 0)
+        assert len(self.board) > 0
 
         self.width = len(self.board[0])
         self.height = len(self.board)
-        assert(self.width > 0 and self.height > 0)
+        assert self.width > 0 and self.height > 0
 
         for l in self.board:
-            assert(len(l) == self.width)
+            assert len(l) == self.width
 
     def valid(self, x, y):
         return x >= 0 and x < self.width and y >= 0 and y < self.height
@@ -40,14 +40,18 @@ def walk_board(self, player, x, y, visited=[]):
             return True
 
         for d in self.directions:
-            if self.walk_board(player, x + d[0], y + d[1], visited + [(x,y)]):
+            if self.walk_board(player, x + d[0], y + d[1], visited + [(x, y)]):
                 return True
 
     def check_player_is_winner(self, player):
         if player == self.black:
-            return any([self.walk_board(player, 0, y) for y in range(self.height)])
+            for y in range(self.height):
+                if self.walk_board(player, 0, y):
+                    return True
         if player == self.white:
-            return any([self.walk_board(player, x, 0) for x in range(self.width)])
+            for x in range(self.width):
+                if self.walk_board(player, x, 0):
+                    return True
 
     def get_winner(self):
         if self.check_player_is_winner(self.black):
@@ -56,6 +60,7 @@ def get_winner(self):
             return self.white
         return self.none
 
+
 def play(board):
     game = ConnectGame(board)
     return game.get_winner()