我正在尽我所能学习Python，因为我最近换了专业，迷上了计算机科学的世界！我真的很喜欢它，但有时也会像很多人一样陷入困境。我目前正在进行乌代米的课程，并试图解决第一个里程碑之一，然而似乎一切都会相应地发生，但。。。结果出错。。。我的想法还不完整，但我喜欢不时地进行测试，以确保一切按计划进行。
我得到了以下错误，但它仍然给了我结果。。。如果有人能给初学者任何提示或建议，我们将不胜感激！(第一个帖子！做得好！：'(
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Player 1 are you X or O? X
Please Input a Number 1-9: 6
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| |O
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Traceback (most recent call last):
File "C:/Users/Danny/Desktop/Python/Python Bootcamp/Milestones/TicTacToe.py", line 76, in <module>
display(gameon_Board)
File "C:/Users/Danny/Desktop/Python/Python Bootcamp/Milestones/TicTacToe.py", line 17, in display
print(board[7]+'|'+board[8]+'|'+board[9])
TypeError: 'NoneType' object is not subscriptable
下方代码
"""This is a TIC TAC TOE GAME!
You need to do the following...
We need to print a board.
Take in player input.
Place their input on the board.
Check if the game is won,tied, lost, or ongoing.
Repeat c and d until the game has been won or tied.
Ask if players want to play again.
Good Luck! """
#Display Board
def display(board):
print(board[7]+'|'+board[8]+'|'+board[9])
print(board[4]+'|'+board[5]+'|'+board[6])
print(board[1]+'|'+board[2]+'|'+board[3])
#Sets up player markers
def player_Marker():
marker = ' '
while marker != 'X' and marker != 'O':
marker = input("Player 1 are you X or O? ")
player1 = marker
if player1 == 'X':
player2 = 'O'
else:
player2 = 'X'
return (player1,player2)
#Takes User Position Input On Board
def player_Choice():
position = 'wrong'
while position not in range(1,10):
position = int(input("Please Input a Number 1-9: "))
return position
#Tack on Inputs to Board
# CLEAN_Board = ['#',' ',' ',' ',' ',' ',' ',' ',' ',' ']
gameon_Board = ['#',' ',' ',' ',' ',' ',' ',' ',' ',' ']
def boardUP(board,position):
turn = 1
if turn == 1:
gameon_Board[position] = player1_Marker
turn = turn - 1
if turn == 0:
gameon_Board[position] = player2_Marker
turn += 1
return display(gameon_Board)
# All Together
game_on = True
gameon_Board = ['#',' ',' ',' ',' ',' ',' ',' ',' ',' ']
while game_on:
display(gameon_Board)
player1_Marker , player2_Marker = player_Marker()
position = player_Choice()
gameon_Board = boardUP(gameon_Board,position)
display(gameon_Board)
display()不返回任何内容，它只是打印电路板。因此，默认返回值为None。
但是boardUP()以return display(gameon_Board)结束，所以它返回None的值。
然后你用把这个结果分配回变量
gameon_Board = boardUP(gameon_Board,position)
因此，在第一次迭代之后，gameon_Board不再包含板元素列表，而是包含None。然后当你试图访问它的下标时，你会得到一个错误。
此外，您将板作为参数传递给boardUP，但它从不使用它；它使用全局变量。您应该使用参数。
将功能更改为：
def boardUP(board,position):
turn = 1
if turn == 1:
board[position] = player1_Marker
turn = turn - 1
if turn == 0:
board[position] = player2_Marker
turn += 1
display(board)
return board