掃雷問題

Question

現在我正試圖在Python中將二維數組（列表清單）放入我的掃雷程序中。然而，當我運行它，它給了我38行錯誤

Traceback (most recent call last): 

    File "F:\MINESWEEPER2.py", line 112, in <module> 

    check_neighbours(reveal,board,bombs) 

    File "F:\MINESWEEPER2.py", line 38, in check_neighbours 

    board[index] = bombcount #copy the number of neighbouring bombs 

    IndexError: list assignment index out of range). 

代碼：

import string 
import os 
import random 
def check_neighbours(index, board, bombs): 

#get the last digit in the index to check for left or right column positions 
if index > 9: 
    strindex = str(index) 
    second = strindex[1] 
else: 
    second = 'a' 

if index == 0: #top left corner 
    offsets=[1,10,11] 
elif index == 9: #top right corner 
    offsets =[-1,9,10] 
elif index == 90: #bottom left corner 
    offsets = [-10,-9, 1] 
elif index ==99: #bottom right corner 
    offsets=[-11,-10,-1] 
elif index > 0 and index < 9: #top row 
    offsets = [-1,1,9,10,11] 
elif index >90 and index < 99: #bottom row 
    offsets = [-1,1,-9,-10,-11] 
elif second == '9':  #Right side column 
    offsets=[-11,-10,-1,9,10] 
elif second == '0':  #Left side column 
    offsets = [-10,-9,1,10,11] 

else: 
    offsets=[-11,-10,-9,-1,1,9,10,11] 
bombcount = 0; 
for i in offsets: #check for bombs in all neighbour positions 
    if index+i in bombs: 
     bombcount+=1 

board[index] = bombcount #copy the number of neighbouring bombs 
if bombcount == 0: 
    board[i][j] = ' ' 
    for i in offsets: #Recursive function call for all neighbours 
     if board[index + i] == '*': 
      check_neighbours(index+i, board, bombs) 


else: 
    return 



def print_reveal(board, bombs): 
count = 0 

rowcount = 0 
for i in board: 
    if count in bombs: 
     i = 'B' 
    print("| ", i, end=" ") 
    if rowcount == 9: 
     print("|") 
     rowcount = 0 
    else: 
     rowcount += 1 
    count += 1 

board = [] 
bombs = [] 
for i in range(10): 
board.append([]) 
    for j in range(10): 
    board[i].append('*') 

for i in range(10): 
for j in range(10): 
    print("|", board[i][j], end=" ") 
print("|") 
bombs = [] 
for i in range(10): 


loc = random.randint(0, 99) 
while loc in bombs: 
    loc = random.randint(0, 99) 
#board[loc] = 'B' 
bombs.append(loc) 


gameon=True 
while(gameon): 

choice = input("Do you want to pick a spot or flag a bomb? (pick or flag)") 
if choice == 'flag': 
    bombloc = int(input("Enter your guess for a bomb location: ")) 
    if bombloc >= 0 and bombloc < 100: 
     if board[bombloc] != '*': 
      print("already chosen!") 
     else: 
      board[bombloc] = 'F' 



else: 

    reveal = int(input("Enter your guess for an open spot: ")) 
    if reveal >= 0 and reveal < 100: 
     if board[i][j] != '*' and board[i][j] != 'F': 
      print("already chosen!") 
     elif reveal in bombs: 
      print("BOOOM!!!") 
      gameon = False 
     else: 
      check_neighbours(reveal,board,bombs) 



if '*' not in board: 
    print("You WIN!") 
    gameon = False 

if(gameon): 
    print_reveal(board,bombs) 
print(bombs) 

這是輸出：

| * | * | * | * | * | * | * | * | * | * | 
    | * | * | * | * | * | * | * | * | * | * | 
    | * | * | * | * | * | * | * | * | * | * | 
    | * | * | * | * | * | * | * | * | * | * | 
    | * | * | * | * | * | * | * | * | * | * | 
    | * | * | * | * | * | * | * | * | * | * | 
    | * | * | * | * | * | * | * | * | * | * | 
    | * | * | * | * | * | * | * | * | * | * | 
    | * | * | * | * | * | * | * | * | * | * | 
    | * | * | * | * | * | * | * | * | * | * | 
    Do you want to pick a spot or flag a bomb? (pick or flag)pick 

    Enter your guess for an open spot: 30 

    Traceback (most recent call last): 

    File "F:\MINESWEEPER2.py", line 112, in <module> 

    check_neighbours(reveal,board,bombs) 

    File "F:\MINESWEEPER2.py", line 38, in check_neighbours 

    board[index] = bombcount #copy the number of neighbouring bombs 

    IndexError: list assignment index out of range 

我不知道該怎麼做解決這個問題

我真的很感謝這個幫助

Answer 1

這個問題似乎是你永遠不會初始化你的主板。在print_reveal的早期部分，您可以：board = []（覆蓋作爲參數傳遞的board值），但從未填充board的任何內容。稍後，當您檢查玩家選中的位置時，您會從if board[bombloc] != '*':獲得IndexError，因爲board仍然是一個空列表。

您需要決定print_reveal是否應該創建董事會。如果沒有，只需擺脫board = []行（並確保傳入的參數是合適的）。否則，您應該擺脫混淆的參數，並設置適當的值（可能是board = ["*"] * 100），而不是使用未初始化的值。