Code

# Tic tac toe game code
# 2 player game
# Can quit anytime

# Importing the turtle library
import sys
import turtle

# Tracking score 
playerX = 0
playerO = 0

# Lists that store the moves of each player
listX = []
listO = []
listZ = []
input_list = ["A1", "A2", "A3", "B1", "B2", "B3","C1", "C2", "C3", "Q"]

# Fullscreen the canvas
screen = turtle.Screen()
screen.title("Tic Tac Toe")
screen.setup(1.0, 1.0)

# Setting up to draw
t = turtle.Turtle()
t.hideturtle()
t.width(4)
t.color("blue")
t.penup()
t.goto(-100,-100)
 
wn = turtle.Screen()
wn.tracer(0)

# Board
for _i in range(4):
  t.pendown()
  t.forward(200)
  t.left(90)
 
# Horizontal lines
t.penup()
t.goto(-100,-35)
t.pendown()
t.forward(200)
 
# Top horizontal line
t.penup()
t.goto(-100, 35)
t.pendown()
t.forward(200)
 
# Vertical lines
t.penup()
t.goto(-35,-100)
t.pendown()
t.left(90)
t.forward(200)

# Left vertical line
t.penup()
t.goto(35,-100)
t.pendown()
t.forward(200)
wn.tracer(1)

# Draws Letter A
t.penup()
t.goto(-80,-150)
t.pendown()
t.write("A", font=("Arial", 30, "normal"))
 
# Draws Letter B
t.penup()
t.goto(-10,-150)
t.pendown()
t.write("B", font=("Arial", 30, "normal"))
  
# Draws Letter C
t.penup()
t.goto(60,-150)
t.pendown()
t.write("C", font=("Arial", 30, "normal"))

# Draws Number 3
t.penup()
t.goto(-130,40)
t.pendown()
t.write("3", font=("Arial", 30, "normal"))

91   # Draws Number 2
 92   t.penup()
 93   t.goto(-130,-30)
 94   t.pendown()
 95   t.write("2", font=("Arial", 30, "normal"))
 96   
97   # Draws Number 1
 98   t.penup()
 99   t.goto(-130,-100)
 100   t.pendown()
 101   t.write("1", font=("Arial", 30, "normal"))
 102   
103   # Create dictionary with coordinates to draw X and O in the square
 104   coordinates = {
 105   'A1': (-100,-100),
 106   'A2': (-100,-35),
 107   'A3': (-100, 35),
 108   'B1': (-35,-100),
 109   'B2': (-35,-35),
 110   'B3': (-35, 35),
 111   'C1': (35,-100),
 112   'C2': (35,-35),
 113   'C3': (35, 35)
 114   }
 115   
116   # Drawing X
 117   def draw_X(x, y):
 118   t.penup()
 119   t.goto(x+7,y-14)
 120   t.pendown()
 121   t.write("X", font=("Arial", 60, "normal"))
 122   
123   # Draw O
 124   def draw_O(x, y):
 125   t.penup()
 126   t.goto(x+5,y-16)
 127   t.pendown()
 128   t.write("O", font=("Arial", 60, "normal"))
 129   
130   # Initiates the game
 131   def refresh_board():
 132   turn = input("Select 'X' or 'O' to play Tic Tac Toe ('Q' to quit): ")
 133   if (turn == 'Q'):
 134   quit_game()
135   if (turn == 'X' or turn == 'O'):
 136   return turn
 137   else:
 138   print("Invalid input. Please enter 'X', 'O', or 'Q'.")
 139   refresh_board()
 140   
141   # Check if square is not empty
 142   def check_overlap(user_input):
 143   if user_input in listZ:
 144   print("Block not available, try again")
 145   return False
 146   else:
 147   return True
 148   
149   # Get user input and draw X or O
 150   def user_location(choice,user_input):
 151   if(check_overlap(user_input)):
 152   user_coordinate = coordinates[user_input]
 153   if choice == "X":
 154   draw_X(user_coordinate[0], user_coordinate[1])
 155   listX.append(user_input)
 156   listZ.append(user_input)
 157   check_win("X",listX)
 158   check_draw()
 159   else:
 160   draw_O(user_coordinate[0], user_coordinate[1])
 161   listO.append(user_input)
 162   listZ.append(user_input)
 163   check_win("O", listO)
 164   check_draw()
 165   return True
 166   else:
 167   return False
 168   
169   # Check for tie
 170   def check_draw():
 171   if (len(listZ) == 9):
 172   print("Game ended in draw")
 173   quit_game()
 174   
175   # Win function
 176   def check_win(player,winlist):
 177   global playerX, playerO
 178   if (("A1" in winlist and "A2" in winlist and "A3" in winlist) or
 179   ("B1" in winlist and "B2" in winlist and "B3" in winlist) or
 180   ("C1" in winlist and "C2" in winlist and "C3" in winlist) or
 181   ("A1" in winlist and "B1" in winlist and "C1" in winlist) or
 182   ("A2" in winlist and "B2" in winlist and "C2" in winlist) or
 183   ("A3" in winlist and "B3" in winlist and "C3" in winlist) or
 184   ("A1" in winlist and "B2" in winlist and "C3" in winlist) or
 185   ("C1" in winlist and "B2" in winlist and "A3" in winlist)):
 186   print("Player ", player, " won.")
 187   if (player == "X"):
 188   playerX+=1
 189   quit_game()
 190   else:
 191   playerO+=1
 192   quit_game()
 193   
194   # Display score before quitting game
 195   def quit_game():
 196   print("Thanks for playing!")
 197   print("playerX won: ",playerX)
 198   print("playerO won: ",playerO)
 199   input("Press Enter to exit ")
 200   sys.exit()
 201   
202   # Main function where it calls other functions and user will input their moves
 203   choice=refresh_board()
 204   turn=choice
 205   # Iteration until end of the game
 206   while True:
 207   print("It's", turn, "turn")
 208   user_input = input("Enter a location: ")
 209   if(user_input == 'Q'):
 210   quit_game()
 211   if (user_input not in input_list):
 212   print("Invalid input. Please enter 'A1', 'A2', 'A3', 'B1', 'B2', 'B3',\
 213    'C1', 'C2', 'C3', or 'Q'")
 214   continue
 215   # Selection based on results that returns true or false
 216   # If true, switch turns and continue game 
if(user_location(turn,user_input)):
if turn == "X":
  turn = "O"
elif turn == "O":
  turn = "X"