无法结束循环-解网

问：

我是 Python 的新手，我必须做这个练习，我需要模拟一只猫在几条线上行走。如果猫找到零食（ * ），他就会吃掉它，并且位置被地板（ _ ）取代。如果猫找到一个洞（），他会掉到下一行，并继续朝同一个方向走。这是猫移动到另一条线的唯一方法。如果猫到达队伍的尽头，它就会改变方向，然后再次走队伍，吃他第一次没有吃的零食。如果猫没有找到另一个洞并到达线的另一端，则循环需要停止。停止循环的另一种方法是，如果猫在最后一行找到一个洞。输出应该是猫在途中发现的零食数量。

我遇到了很多麻烦，试图让猫停下来，只有当它已经到达线的两端时。请帮忙！

这些图像有输入（黑色）和猫应该如何走路（红色）的示例。

例子

platforms = []
n = int(input())

for _ in range(n):
    platforms.append(list(input()))

# Path simulation
treats = 0
row = 0
column = 0
direction = 1  # 1 represents the right direction and -1 represents the left direction

while True:
    if row >= n:
        break

    if column < 0 or column >= len(platforms[row]):
        column -= direction
        direction *= -1  # changes direction at the edges of the rows

        # Check if the cat reached both ends of the line without finding any hole
        if (column == 0 and platforms[row][column] != '.') or (column == len(platforms[row]) and platforms[row][column] != '.'):
            break

    elif platforms[row][column] == '_':
        column += direction

    elif platforms[row][column] == '*':
        treats += 1
        platforms[row][column] = '_'  # replaces the treat with floor ( _ )
        column += direction

    elif platforms[row][column] == '.':
        if row == n:
            break
        if column == 0 or column == len(platforms[row]):
            row += 1  # falls to the lower level in the same column
            column += direction  # moves to the next column in the same row
        else:
            row += 1  # falls to the lower level in the same column
            column += direction  # moves to the next column in the same row

print(treats)

python 循环 while-loop break

# Initialize flag
hit_one_edge = False

while True:

    # ...

    if column < 0 or column >= len(platforms[row]):
        if hit_one_edge:
            print("Hit both edges, nowhere to go. Game over.")
            break
        else:
            # This is the first time we hit an edge, keep going
            hit_one_edge = True

        column -= direction
        direction *= -1  # changes direction at the edges of the rows

    # ...

    elif platforms[row][column] == '.':
        # Reset edge flag as we are on a new platform:
        hit_one_edge = False

        if row == n:
            break

    # ...

无法结束循环

Trouble ending a loop

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