Question

我有这段代码：

?randomquerystring

并且它不使用首次使用构建器时的当前长度，但它再次从0开始。为什么会这样？

Answer 1

current_length不会更改builder外部功能。但是你会返回新的值，所以就这样做：

current_length = builder(current_lenght,current_value,number_of_bricks,goal)

第一次拨打builder

Answer 2

关键问题是，您没有将current_lenght（原文如此）重新分配给builder正文中函数bricks返回的值。

我已经解决了这个问题并整理了你的代码风格，使代码更具可读性。我是强迫症，但良好的代码风格和评论也可以帮助捕捉和修复错误。

希望这有帮助！

def bricks(small, big, goal):
    # Passing the following values:
    # current_length = 0
    # current_value = 5
    # number_of_bricks = big

    current_length = builder(0, 5, big, goal)

    print("in bricks", current_length)

    # Passing the following values:
    # current_length as calculated above
    # current_value = 1
    # number_of_bricks = small

    builder(current_length, 1, small, goal)

    if current_length == goal:
        return True
    else:
        return False

def builder(current_length, current_value, number_of_bricks, goal):

    use_count = 1

    while (goal - current_length) >+ current_value and use_count <= number_of_bricks:
        current_length += current_value
        print("in while", current_length)
    print(current_length)

    return current_length

if __name__ == '__main__':
    # Let's test what we've written
    bricks(1, 10, 100)

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2 个答案: