Question

我已经开始在Python中编写一个程序，用户可以在其中输入他们想要向上/向下和向左/向右移动的空间数，并使用.split（）内置函数来执行此操作，但是当我运行时程序我得到错误'值错误：太多值解包（两个预期）'只给出两个。如果有人帮我解决了这个问题，我将非常感激。我在下面附上了我的代码： /编辑 - 我在下面附上了我的所有代码：

choice=0
b=0
oldP=0
newP=0
player_location=' X '
x=8
y=0
xi=0
yi=0
up=0
down=0
left=0
right=0
new_board=[xi][yi]
gold_coins=0
bandits=5
treasure_chests=10
a=1
xi2=0
yi2=0

import random
def menu():
    print('If you would like to play the Treasure Hunt , press 1')
    choice=input('If not, press any key to exit')
    if choice=='1':
        print('Great! You have made the right choice :)')
    else:
        print('Goodbye.')
        quit()
menu()
def grid():
    new_board = [ ]

def board():
  new_board = [ ]
  top_row = [' 1 ',' 2 ',' 3 ',' 4 ',' 5 ',' 6 ',' 7 ',' 8 ']

  new_board.append(top_row)

  for x in range(0,8):
    row = [' 0 ']*8
    new_board.append(row)
  return new_board

def print_board(b):
  row_numbers = [' ','1','2','3','4','5','6','7','8']
  i = 0
  for row in b:
    print (row_numbers[i],''.join(row))
    i=i+1
new_board = board()
xi=int(8)
yi=int(0)
new_board[xi][yi] = player_location
while a==1:
    def get_move():
        advice  = 'Please enter your move in two integers, vertical, then horizontal.  Use positive numbers for up and right, negative for down and left.'
        example = 'For example, an input of \'22\' would be 2 moves vertically, and 2 moves horizontally.'
        move = input(advice + example)
        move.split()
        x_move,y_move=move
        x_move = int(move[0])
        y_move = int(move[1])
        return x_move, y_move, move

while True:
    print_board(new_board)
    x_move, y_move = get_move() 
    move(x_move, y_move)  # performs the move; updates the board    grid()

Answer 1

完整的回溯本来不错，但错误很明显：你要返回3个值return x_move, y_move, move

并将返回值分配给2个值：x_move, y_move = get_move()

删除第3个返回值，因为信息已经包含在前2个坐标数据

中，所以没用

请注意，它只会失败，因为python无法决定如何将返回值分配给提供的变量（3 =＆gt; 2）。仅分配给1个变量就可以了，并且会存储3个大小的元组。

编辑：Willem回答指出了另一个错误：move.split()什么也没做，所以你先打包的解包错误就在那里：

x_move,y_move=move

（您必须修复两个错误才能使代码正常工作）

Answer 2

问题可能是你的get_move()函数返回一个有三个值的元组，而调用者只想获取两个：


def get_move():
    advice  = 'Please enter your move in two integers, vertical, then horizontal.  Use positive numbers for up and right, negative for down and left.'
    example = 'For example, an input of \'22\' would be 2 moves vertically, and 2 moves horizontally.'
    move = input(advice + example)
    move.split()
    x_move,y_move=move
    x_move = int(move[0])
    y_move = int(move[1])
    return x_move, y_move, move # three values

    while True:
        print_board(new_board)
        x_move, y_move = get_move() # two values?
        move(x_move, y_move)

如果您不关心这些值，您可以丢弃剩余的，例如使用x_move, y_move, *_：


def get_move():
    advice  = 'Please enter your move in two integers, vertical, then horizontal.  Use positive numbers for up and right, negative for down and left.'
    example = 'For example, an input of \'22\' would be 2 moves vertically, and 2 moves horizontally.'
    move = input(advice + example)
    move.split()
    x_move,y_move=move
    x_move = int(move[0])
    y_move = int(move[1])
    return x_move, y_move, move # three values

    while True:
        print_board(new_board)
        x_move, y_move,*_ = get_move()
        move(x_move, y_move)

另外请注意move.split() 不能内联，请记住str（字符串）是不可变的，您需要捕获结果，因此您应该重写{{ 1}}功能：

get_move

或类似的东西。

为什么我会收到一个Value错误：解压缩的值太多了？

2 个答案: