I am trying tic tac toe game in python using jupiter note book, but it shows some error when running / place_marker(test_board, '$' , 8)

Question

enter cTIC TAC TOE Game !

from IPython.display import clear_output
​
def display_board(board):
    clear_output()
    
    print (\'   |   | \')
    print (\' \' +