HW1 Q3 Fall 2020

hw1q3Sol.py

"""tictactoe game for 2 players"""

choices = [] ## Err1: add the declaration for array choices.

for x in range (1, 10) : ## Err2: range incorrect. range (1, 9) only contains number from 1 to 8
    choices.append(str(x)) ## Err3: x is an integer, you need to convert it to string when append to the list

playerOneTurn = True ## Err4: it should be = instead of ==
winner = False


def printBoard():
    print( '\n -----')
    print( '|' + choices[0] + '|' + choices[1] + '|' + choices[2] + '|')
    print( ' -----')
    print( '|' + choices[3] + '|' + choices[4] + '|' + choices[5] + '|')
    print( ' -----')
    print( '|' + choices[6] + '|' + choices[7] + '|' + choices[8] + '|')
    print( ' -----\n')


while not winner: ## Err5: logic error. The condition should be not winner
    printBoard() ## Err6: name error. python variable name is case sensitive

    if playerOneTurn :
        print( "Player 1:")
    else :
        print( "Player 2:")

    try:
        choice = int(input(">> "))
    except:
        print("please enter a valid field")
        continue

    if choices[choice - 1] == 'X' or choices [choice-1] == 'O': ## Err7: first = should be ==
                                        ## Err8: logic error. The second choice should be choice-1
        print("illegal move, please try again")
        continue

    if playerOneTurn :
        choices[choice - 1] = 'X' ## Err9: string should be wrapped with ''
    else :
        choices[choice - 1] = 'O' ## Err9: string should be wrapped with ''

    playerOneTurn = not playerOneTurn

    for x in range (0, 3) :
        y = x * 3
        if (choices[y] == choices[(y + 1)] and choices[y] == choices[(y + 2)]) :
            winner = True
            printBoard()
        if (choices[x] == choices[(x + 3)] and choices[x] == choices[(x + 6)]) :
            winner = True
            printBoard()

    if((choices[0] == choices[4] and choices[0] == choices[8]) or
       (choices[2] == choices[4] and choices[4] == choices[6])) :
        winner = True  ## Err10: True should be capitalized for the first letter
        printBoard()

print ("Player " + str(int(playerOneTurn + 1)) + " wins!\n")