Question

我正在制作一个个人冒险游戏项目，但似乎无法在一个函数中运行此代码，

current_room = "South"

def go_to_room():
    if "go" in main_input:
        if "north" in main_input:
            current_room = "North"

while True:
    main_input = input(str())
    go_to_room(main_input)
    print("You are in the " + current_room + " room.")

当我运行它并键入“向北”时，它会返回

You are in the South room

但是如果我这样写代码，

current_room = "South"

while True:
    main_input = input(str())

if "go" in main_input:
    if "north" in main_input:
        current_room = "North"

print("You are in the " + current_room + " room.")

它完美地工作。

那么有人可以帮助我，告诉我我做错了什么吗？

Answer 1

问题是范围。 main_input仅在go_to_room的范围内更改，因此该值在函数外将保持不变。同样，函数永远不会被调用，只需定义它即可。在这种情况下，我建议将参数传递给函数以使其起作用。

current_room = "South"

def go_to_room(room):
    if "go" in room:
        if "north" in room:
            return "North"

while True:
    main_input = input("Room: ")
    current_room = go_to_room(main_input)
    print("You are in the " + current_room + " room.")

Answer 2

您必须调用该函数。

while True:
    main_input = input(str())
    go_to_room()
    print("You are in the " + current_room + " room.")

Answer 3

尝试这样写：

current_room = "South"

def go_to_room(user_input):
    if "go" in user_input:
        if "north" in user_input:
            global current_room
            current_room = "North"

while True:
    main_input = input()
    go_to_room(main_input)
    print("You are in the " + current_room + " room.")

Answer 4

在代码的第一部分中，您没有调用函数go_to_room()。因此，当您运行此代码时，您将停留在while循环中，这就是为什么输出为

的原因

You are in the South room

在代码的第二部分中，您检查了given_input是go' and北`之一。

如果发现这是正确的，则仅current_room的值更改为North。然后您将得到相应的输出。

我的函数没有运行，但是当我在函数外部运行代码时，它就可以运行

4 个答案: