Question

PYTHON Exercise 2. Tic-Tac-Toe In this exercise we are going to create a Tic-Tac-Toe game. 1. Create the data structure – Nine slots that can each contain an X, an O, or a blank. – To represent the board with a dictionary, you can assign each slot a string-value key. – String values in the key-value pair to represent what’s in each slot on the board: ■ 'X' ■ 'O' ■ ‘ ‘ 2. Create a function to print the board dictionary onto the screen 3. Add the code that allows the players to enter their moves (Note: This isn’t a complete tic-tac-toe game — for instance, it doesn’t ever check whether a player has won — but it’s enough to see how data structures can be used in programs. )

Answer 1

Output

Code...............

# This fucntion takes a dictionary as the input and then prints the values in the dictionary

def print_board(board):

    i=0

    print("-------------")

    for key,value in board.items():

        print("| {} ".format(value),end="")

        i=i+1

        # If we have printed 3 elements then we move to the next line

        if i%3==0:

            print("|")

            print("-------------")

# This function contains the whole game play

def play_game():

    # First we define a dictionary called board to store all the key value pairs in the dictionary

    board={}

    # Then we populate all the places in the dictionary with _ which means that they are empty

    for i in range(1,10):

        board[i]='_'

    # The variable turns keeps the count of how many turns have been played.The total number of turns that can be played is 9

    turns=0

    # This variable is a boolean variable that tells whose turn it is

    play1=True

    # As long as turns are not 9 keep playing

    while turns<9:

        # Rows and columns are used for indexing the location where the user want to enter the input

        row=0

        col=0

        place=0

        # If the player1 is true its player1's turn or its player2's turn

        if play1:

            print("Player 1's turn")

            # We take the inputs from the user

            row=int(input("Enter the row(1-3) :"))

            col=int(input("Enter the col(1-3) :"))

            # Then we calculate the index number

            place=(row-1)*3+col

            # If the input given is wrong then we repeat the input statements again

            # The place shouldnt be already filled

            # The row and column index shouldnt be out of range

            if row>3 or row<1 or col>3 or col<1 or board[place]=='X' or board[place]=='O':

                print("Wrong Input.Play Again")

                continue

            # If there arent any errors then we place the user's input

            board[place]='X'

            # We make the user's turn to false to allow the other player to play

            play1=False

            # We print the board every time a user plays

            print_board(board)

        # Player2's turn

        else:

            print("Player 2's turn")

            row=int(input("Enter the row(1-3) :"))

            col=int(input("Enter the col(1-3) :"))

            place=(row-1)*3+col

            if row>3 or row<1 or col>3 or col<1 or board[place]=='X' or board[place]=='O':

                print("Wrong Input.Play Again")

                continue

            board[place]='O'

            play1=True

            print_board(board)

        turns=turns+1

    print("All places filled...")

# We call the play_game function which takes care of the inputs and printing the board

play_game()

Hope it helps you..In case of any queries feel free to ask...

Happy coding :)