从 if 语句中删除 IndexError - 迷宫解决软件

Question

所以我想编写一个解决迷宫的程序，但导入迷宫已经失败了。这是我的代码：

def import_maze(filename):
    temp = open(filename, 'r')
    x, y = temp.readline().split(" ")
    maze = [[0 for x in range(int(y))] for x in range(int(x))]
    local_counter, counter, startx, starty = 0, 0, 0, 0
    temp.readline()
    with open(filename) as file:
        maze = [[letter for letter in list(line)] for line in file]

    for i in range(1, int(y)):
        for z in range(0, int(x)):
            if maze[i][z] == '#':
                local_counter += 1
            if local_counter < 2 and maze[i][z] == " ":
                counter += 1
            if maze[i][z] == 'K':
                startx, starty = i, z
        local_counter = 0

    return maze, startx, starty, counter


maze, startx, starty, counter = import_maze("kassiopeia0.txt")

print(counter, "\n", startx, ":", starty, "\n", maze)

稍微解释一下：local_counter 是"showing" 迷宫的边界。所以我可以计算数组中的空白元素。它们的数量将保存在柜台中，我需要作为回避依据。我收到的错误消息是：

C:\Python34\python.exe C:/Users/Anton/PycharmProjects/BWINF_Aufgabe_1/Wegfinden.py
Traceback (most recent call last):
  File "C:/Users/Anton/PycharmProjects/BWINF_Aufgabe_1/Wegfinden.py", line 27, in <module>
    maze, startx, starty, counter = import_maze("kassiopeia0.txt")
  File "C:/Users/Anton/PycharmProjects/BWINF_Aufgabe_1/Wegfinden.py", line 16, in import_maze
    if maze[i][z] == '#':
IndexError: list index out of range

Process finished with exit code 1

最后是 kassiopeia0.txt-文件：

6 9
#########
#  #    #
#  # #  #
#  K #  #
#    #  #
#########

对不起我的英语。

Answer 1

您在 kassiopeia0.txt 的 header 行中指定了一个 6×9 迷宫，但文件的其余部分包含一个 9×6 迷宫。

交换 6 和 9，迷宫应该可以正常显示。它对我有用。

Answer 2

@卢克是对的。我建议您使用以下代码：

def import_maze(filename):

    with open(filename) as f:
        maze = [[letter for letter in line.strip()] for line in f.readlines() if line.strip()]

    local_counter, counter, startx, starty = 0, 0, 0, 0

    for y, row in enumerate(maze):
        for x, cell in enumerate(row):
            if cell == '#':
                local_counter += 1

            elif local_counter < 2 and cell == ' ':
                counter += 1

            elif cell == 'K':
                startx, starty = x, y

        local_counter = 0

    return maze, startx, starty, counter

您的文件是：

#########
#  #    #
#  # #  #
#  K #  #
#    #  #
#########

从 if 语句中删除 IndexError - 迷宫解决软件

Remove IndexError from if statement - Maze solving Software

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