Checkpoint 2

To decide on a winner, the game needs to check each of the winning
combinations on the board for either x symbols or o symbols and
then return the correct winner. To do this, I utilized 2 functions, a
check_winning_combo, which checked each index in each combination to see
if an x or o symbol was present, and then a check_winner which sent each
possible winning combination through check_winning combo. If the combo
did not have all x's or all o's (a mix of x's and o's and/or blanks)
the check_winning combo returned false otherwise it returned true.

notes.md

@@ -30,6 +30,7 @@ and it's your turn, which action would you take? Why?
 ---+---+---   ---+---+---   ---+---+---   ---+---+---
    |   |         |   | O       |   |         |   |   
 
+
 ### Initial game state
 
 You can get the inital game state using game.get_initial_state(). 

ttt/game.py

@@ -58,4 +58,25 @@ class TTTGame:
 
     def check_winner(self, state, symbol):
         "Checks whether the player with `symbol` has won the game."
+        combos = [
+            [0, 1 ,2],
+            [3, 4, 5],
+            [6, 7, 8],
+            [0, 3, 6],
+            [1, 4 ,7],
+            [2, 5 ,8],
+            [0, 4 ,8],
+            [2, 4 ,6]
+        ]
+        for combo in combos:
+            if self.check_winning_combo(state,symbol,combo):
+                return True
         return False
+
+    def check_winning_combo(self, state, symbol, combo):
+        """Checks whether all three spaces in a combo eg[1,2,3] are 
+        filled with a symbol"""
+        for index in combo:
+            if state["board"][index] != symbol:
+                return False
+        return True