不能突破一個循環

Question

我正在寫一個糟糕的基於文本的冒險，我無法弄清楚如何打破這個循環。 我會嘗試在這里發布相關的東西。 如果我的評論沒有充分解釋我正在嘗試做什么，請告訴我。

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()

預期的行為是我將“退出”或“離開”或“俱樂部”輸入到輸入中，home（）函數將結束，並且club（）函數將啟動。 實際發生的是終端只是繼續打印“你在房間里”，並不斷給我輸入。

如果我必須的話，我會發布完全未刪節的代碼，但我不願意，因為實際的冒險並不完全......專業。

Answer 1

什么break正在打破home()函數中的循環。 因此，當它破裂時，它將回到開頭

while finished == 0:

並將繼續重復這一輸入。

你必須在home() （和club() ）之后提供break ：

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

---

順便說一句，你的代碼非常混亂。 雖然循環不應該用於這樣的事情（除非你試圖獲得exit或leave的輸入）

你也可以擺脫最后的循環。

Answer 2

我認為你需要讓current_room成為一個全局變量。 因為home()的變量current_room和while finished的變量具有不同的范圍。

以下是我想要實現的目標。 查看python變量范圍

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

雖然我從來沒有真正理解代碼對於這個有效的解決方案的意義。 您還沒有聲明變量是全局變量還是本地變量，為什么在使用簡單的if-else語句時會使用循環

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()