python-3.x - 演算子に代入できません。Pythonのif文の複数の代入

Question

4 番目の elif エンディングでエラーがスローされ、オペレータに割り当てることができません。私は三目並べゲームを設計しようとしており、選択に基づいてプレーヤー X と 0 を割り当てています。オペレーターに割り当てられません

def player_input(player):
    marker = ''
    while(marker != 'X' and marker != '0'):
        marker = input('{},choose X or 0:'.format(player))

    if(player == 'Player1' and marker == 'X'):
        temp_player1 = 'Player1' and player1_marker = 'X' and temp_player2 = 'Player2' and player2_marker = '0'
    elif(player == 'Player1' and marker == '0'):
        temp_player1 = 'Player1' and player1_marker = '0' and temp_player2 = 'Player2' and player2_marker = 'X'
    elif(player == 'Player2' and marker == 'X'):
        temp_player1 = 'Player1' and player1_marker = '0' and temp_player2 = 'Player2' and player2_marker = 'X'
    elif(player == 'Player2' and marker == '0'):
        temp_player1 = 'Player1' and player1_marker = 'X' and temp_player2 = 'Player2' and player2_marker = '0'
    else:
        pass

    return(temp_player1,player1_marker,temp_player2,player2_marker)