Question

我正在写一个糟糕的基于文本的冒险，我无法弄清楚如何打破这个循环。我会尝试在这里发布相关的东西。如果我的评论没有充分解释我正在尝试做什么，请告诉我。

chained = 1
finished = 0

# home() and club() act as rooms in the game
def home():
    while chained == 1:
        # there's a way to unchain yourself that works
        chained = 0
    while chained == 0:
        print 'your are in the room'
        input = raw_input('> ')
        if 'exit' in input or 'leave' in input or 'club' in input:
            current_room = 'club'
            break

def club():
    print "this works"

# These sort of move you around the rooms.
# current_room keeps track of what room you're in
current_room = 'home'
while finished == 0:
    if current_room == 'home':
        home()
    if current_room == 'club':
        club()

预期的行为是我将“退出”或“离开”或“俱乐部”输入到输入中，home（）函数将结束，并且club（）函数将启动。实际发生的是，终端只是继续打印“你在房间里”，并不断给我输入。

如果必须，我会发布完全未删节的代码，但我不愿意，因为实际的冒险并不完全......专业。

Answer 1

break正在做的是突破home()函数中的循环。所以当它破裂时，它会回到

的开头

while finished == 0:

并将继续重复该输入。

您必须在break（和home()）之后提供club()：

while finished == 0:
    if current_room == 'home':
        home()
        break
    if current_room == 'club':
        club()
        break

顺便说一句，你的代码非常混乱。虽然循环不应该用于这样的事情（除非您尝试获取exit或leave的输入）

你也可以摆脱最后的循环。

Answer 2

我认为您需要将current_room作为全局变量。因为current_room中的变量home()和while finished中的变量具有不同的范围。

以下是我想要实现的目标。查看python变量范围

chained = 1
finished = 0
current_room = 'home'

# home() and club() act as rooms in the game
def home():
    global chained
    # without the following line current_room has local scope and updating its value will not be
    # reflected in the while at the end
    global current_room 
    while chained == 1:
        # there's a way to unchain yourself that works
        chained = 0
    while chained == 0:
        print 'your are in the room'
        input = raw_input('> ')
        if 'exit' in input or 'leave' in input or 'club' in input:
            current_room = 'club'
            break

def club():
    print "this works"

# These sort of move you around the rooms.
# current_room keeps track of what room you're in
while finished == 0:
    if current_room == 'home':
        home()
    if current_room == 'club':
        club()

Answer 3

虽然我从来没有真正理解代码对于这个有效的解决方案的意义。您还没有说明变量是全局变量还是本地变量，为什么在使用简单的 if-else 语句时会使用循环

chained = 0
finished = 0

# home() and club() act as rooms in the game
def home():
    global chained,current_room
    if chained == 1:
        # there's a way to unchain yourself that works
        chained = 0
    if chained == 0:
        print 'your are in the room'
        input = raw_input('> ')
        if 'exit' in input or 'leave' in input or 'club' in input:
            current_room = 'club'
            club()

# Not sure if finished is a local or global variable
def club():
    global finished,current_room
    print "this is messy code!!"
# These sort of move you around the rooms.
# current_room keeps track of what room you're in
    current_room = 'home'
    if finished == 0:
        if current_room == 'home':
            home()
        if current_room == 'club':
            club()
home()

不能突破一个循环

3 个答案: