[英]TypeError: cannot unpack non-iterable NoneType object Error
I looked at the other answers but they didn't seem to work for me, or I could just be doing something wrong, or not understanding what I am supposed to do in the context of this code.我查看了其他答案,但它们似乎对我不起作用,或者我可能只是做错了什么,或者不理解在这段代码的上下文中我应该做什么。 On line 78, it talks about how there is a Nonetype value, even though I assigned a value to both variables no matter what.
在第 78 行,它讨论了如何存在 Nonetype 值,即使我无论如何都为这两个变量分配了一个值。
Here is a link to a similar problem (I think): [https://stackoverflow.com/questions/53680913/typeerror-cannot-unpack-non-iterable-nonetype-object][1]这是一个类似问题的链接(我认为):[https://stackoverflow.com/questions/53680913/typeerror-cannot-unpack-non-iterable-nonetype-object][1]
Here is where I think the faulty code lies:这是我认为错误代码所在的地方:
def check_win(turn, gamestate):
if turn == 1:
if gamestate[0] == gamestate[1] == gamestate[2] != '-' or gamestate[3] == gamestate[4] == gamestate[5] != '-' or gamestate[6] == gamestate[7] == gamestate[8] != '-':
winner = 1
win = True
return winner, win
elif gamestate[0] == gamestate[3] == gamestate[6] != '-' or gamestate[1] == gamestate[4] == gamestate[7] != '-' or gamestate[2] == gamestate[5] == gamestate[8] != '-':
winner = 1
win = True
return winner, win
elif gamestate[0] == gamestate[4] == gamestate[8] != '-' or gamestate[2] == gamestate[4] == gamestate[6] != '-':
winner = 1
win = True
return winner, win
elif turn == 2:
if gamestate[0] == gamestate[1] == gamestate[2] or gamestate[3] == gamestate[4] == gamestate[5] or gamestate[6] == gamestate[7] == gamestate[8]:
winner = 2
win = True
return winner, win
elif gamestate[0] == gamestate[3] == gamestate[6] or gamestate[1] == gamestate[4] == gamestate[7] or gamestate[2] == gamestate[5] == gamestate[8]:
winner = 2
win = True
return winner, win
elif gamestate[0] == gamestate[4] == gamestate[8] or gamestate[2] == gamestate[4] == gamestate[6]:
winner = 2
win = True
return winner, win
else:
winner = 'None'
win = False
return winner, win
Later on when I try to alter those values in another function:稍后当我尝试在另一个函数中更改这些值时:
winner, win = check_win(turn, gamestate) <--- Where error was found
Here is the code in its entirety :这是完整的代码:
print('Tic Tac Toe:')
pos = 0
turn = 1
gamestate = ['-', '-', '-', '-', '-', '-', '-', '-', '-']
def display_board(gamestate):
print(gamestate[0:3])
print(gamestate[3:6])
print(gamestate[6:9])
def move_validity(pos, gamestate):
if str(gamestate[int(pos)]) != '-':
print('Invalid move.')
valid = False
return valid
else:
valid = True
return valid
def update(gamestate, pos):
if turn == 1:
gamestate[int(pos)] = 'X'
if turn == 2:
gamestate[int(pos)] = 'O'
else:
print('ERROR')
def check_win(turn, gamestate):
if turn == 1:
if gamestate[0] == gamestate[1] == gamestate[2] != '-' or gamestate[3] == gamestate[4] == gamestate[5] != '-' or gamestate[6] == gamestate[7] == gamestate[8] != '-':
winner = 1
win = True
return winner, win
elif gamestate[0] == gamestate[3] == gamestate[6] != '-' or gamestate[1] == gamestate[4] == gamestate[7] != '-' or gamestate[2] == gamestate[5] == gamestate[8] != '-':
winner = 1
win = True
return winner, win
elif gamestate[0] == gamestate[4] == gamestate[8] != '-' or gamestate[2] == gamestate[4] == gamestate[6] != '-':
winner = 1
win = True
return winner, win
elif turn == 2:
if gamestate[0] == gamestate[1] == gamestate[2] or gamestate[3] == gamestate[4] == gamestate[5] or gamestate[6] == gamestate[7] == gamestate[8]:
winner = 2
win = True
return winner, win
elif gamestate[0] == gamestate[3] == gamestate[6] or gamestate[1] == gamestate[4] == gamestate[7] or gamestate[2] == gamestate[5] == gamestate[8]:
winner = 2
win = True
return winner, win
elif gamestate[0] == gamestate[4] == gamestate[8] or gamestate[2] == gamestate[4] == gamestate[6]:
winner = 2
win = True
return winner, win
else:
winner = 'None'
win = False
return winner, win
def restart():
gamestate = ['-', '-', '-', '-', '-', '-', '-', '-', '-']
turn = 1
win = False
return gamestate, turn, win
def choose_position():
pos = input('Player ' + str(turn) + ': ')
if int(pos) < 0 or int(pos) > 8:
print('Invalid move')
else:
return pos
def Tic_Tac_Toe():
while True:
global pos
global turn
if turn == 1:
pos = choose_position()
valid = move_validity(pos, gamestate)
if valid == True:
update(gamestate, pos)
if valid == False:
break
winner, win = check_win(turn, gamestate)
if win == True:
print(str(winner) + ' wins!')
break
if '-' not in gamestate:
print('Tie game.')
break
if turn == 2:
pos = choose_position()
if move_validity(pos, gamestate) == True:
continue
if move_validity(pos, gamestate) == False:
break
update(gamestate, pos)
winner, win = check_win(turn, gamestate)
if win == True:
print(str(winner) + ' wins!')
break
turn = 1
if '-' not in gamestate:
print('Tie game.')
break
display_board(gamestate)
display_board(gamestate)
Tic_Tac_Toe()
restart_case = input('y/n Would you like to play? ')
if restart_case == 'y':
gameboard, turn, win = restart()
Thank you so much, and sorry if the solution was a small typo, I am really new to this and have spent way too much time on this.非常感谢,如果解决方案是一个小错字,我很抱歉,我对此真的很陌生,并且在这方面花费了太多时间。 :D
:D
There are certain cases where you don't return anything in the function check_win
.在某些情况下,您不会在函数
check_win
中返回任何内容。
For example, when turn == 1
, you have an if
, elif
, elif
block within that, but nothing for else
.例如,当
turn == 1
时,其中有一个if
、 elif
、 elif
块,但else
没有。 So, when turn == 1
, if none of the if
statements within the block for that are true, your function will return nothing.因此,当
turn == 1
时,如果块中没有任何if
语句为真,则您的函数将不返回任何内容。 There is a similar problem for turn == 2
. turn == 2
也有类似的问题。 You may want to add the code you have in the else
block for that function as an else
block for both turn == 1
and turn == 2
, as this will fix your problem.您可能希望将该函数的
else
块中的代码添加为turn == 1
和turn == 2
的else
块,因为这将解决您的问题。
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