def printBoard(board):
for i in board:
for j in i:
print(j, end="")
print()
def autofill(board,square):
if board[int(square[0])][int(square[1])] == "X":
pass
else:
board[int(square[0])][int(square[1])] = "X"
if int(square[0]) + 1 < len(board[int(square[0])]):
squareList2 = [(int(square[0]) + 1), (int(square[1]))]
board = autofill(board,squareList2)
if int(square[0]) - 1 >= 0:
squareList3 = [(int(square[0]) - 1),(int(square[1]))]
board = autofill(board, squareList3)
if int(square[1]) + 1 < len(board[int(square[1])]):
squareList4 = [(int(square[0])),(int(square[1]) + 1)]
board = autofill(board, squareList4)
if int(square[1]) - 1 >= 0:
squareList5 = [(int(square[0])),(int(square[1] - 1))]
board = autofill(board, squareList5)
return board
def main():
board = []
filename = input("Please enter a filename: ")
file = open(filename,"r")
for line in file:
row = []
for item in line:
if item != "\n":
row.append(item)
board.append(row)
printBoard(board)
square1 = ""
while square1 != "q":
square1 = input("Please enter a square to fill, or q to exit: ")
if square1 != "q":
squareList = square1.split(", ")
squareList[0] = int(squareList[0]) - 1
squareList[1] = int(squareList[1]) - 1
board = autofill(board, squareList)
print(len(board))
print(len(board[0]))
printBoard(board)
main()
输出
Please enter a filename: input.txt
OOOOOOXOOOO
OOOOOXOOOOO
OOOOXOOOOOO
XXOOXOOOOOO
XXXXOOOOOOO
OOOOOOOOOOO
Please enter a square to fill, or q to exit: 1, 1
6
11
XXXXXXXOOOO
XXXXXXOOOOO
XXXXXOOOOOO
XXXXXOOOOOO
XXXXOOOOOOO
OOOOOOOOOOO
Please enter a square to fill, or q to exit: 6, 1
Traceback (most recent call last):
File "proj2.py", line 49, in <module>
main()
File "proj2.py", line 44, in main
board = autofill(board, squareList)
File "proj2.py", line 14, in autofill
board = autofill(board,squareList2)
File "proj2.py", line 8, in autofill
if board[int(square[0])][int(square[1])] == "X":
IndexError: list index out of range
而不是得到错误,6,1应该使一切都成为X.
这是学校的家庭作业,规则是&#34;自动填充需要一个给定的方格,如果是X则什么都不做。如果正方形中有一个O,它会将O更改为X并自动填充上方,下方,左侧和右侧的方块。该程序的示例运行:&#34;
文本文件并不重要,它只是导入2d列表板的方式。
我不明白为什么我会遇到这些列表问题。我打印出行长和列长,它们似乎是正确的。
答案 0 :(得分:1)
看起来问题是您正在检查是否可以通过检查square[0]
的长度来增加board[int(square[0])]
,而不仅仅是board
的长度。 square[1]
也是如此 - 您正在检查board[int(square[0])][int(square[1])]
而不是board[int(square[0])]
。实际上,你检查的程度太深了。
我已经修复了问题,并且明显清理了代码(在我清理完代码之前,我无法修复它)。 autofill()
以外的更改标有# note change
。
def printBoard(board):
for i in board:
print(*i, sep='') # note change
def autofill(board,x, y):
if board[x][y] != "X":
board[x][y] = "X"
if x + 1 < len(board):
board = autofill(board,x+1, y)
if x - 1 >= 0:
board = autofill(board, x-1, y)
if y + 1 < len(board[x]):
board = autofill(board, x, y+1)
if y - 1 >= 0:
board = autofill(board, x, y-1)
return board
def main():
filename = input("Please enter a filename: ")
with open(filename, 'r') as f: # note change
board = [list(line.strip()) for line in f] # note change
printBoard(board)
square1 = ""
while square1 != "q":
square1 = input("Please enter a square to fill, or q to exit: ")
if square1 != "q":
x, y = map(int, square1.split(",")) # note change
x-=1 # note change
y-=1 # note change
board = autofill(board, x, y) # note change
printBoard(board)
main()