Python 函数不将布尔值从true更改为false

我正在尝试创建一个交互式故事代码，代码中的布尔值似乎没有从true变为false。 这是：

age = input ("Type in your age")
print("You're bored during quarantine and decide to go visit a haunted house alone. You visit the house, open the door, and walk in.")
print("You are in front of a creepy door in a hallway.")
print("What do you want to do?")
action = input ("Type: in, left, or right. Then click OK or press enter")
survive = False

def survival():
  if age%2 == 0:
    survive = False
  else:
    survive = True
    
survival()

if action == "in":
  print("You choose to go in.")
  print("The room is pitch black")
  if survive == False:
    print("A monster pops out of the corner and eats you!")
  else:
    print("You turn the light on and realize that this is just an old bathroom. Gross.")
if action == "left":
  print("You choose to turn left.")
  print("A ghost appears at the end of the hall.")
  if survive == False:
    print("The ghost chases you down and haunts your soul forever!")
  else:
    print("Your eyes mistook you, it was a spiderweb.")
if action == "right":
  print("You choose to turn right")
  print("A greenish light is visible in the distance")
  if survive == False:
    print("The light gets brighter and brighter, and you realize it was the headlamp of a ghost coal miner!")
  else:
    print("You go to check out the light, turns out it's some old christmas lighting still plugged in.")
    
if survive == False:
  print("May your soul rest eternally as you join the other ghosts at the haunted house.")
else:
  print("You survived your stay at the haunted house and apparently it's just a house.")

---

你可以看到，我正试图得到这个人的年龄，如果平均除以2，那么将生存设置为false。然而，无论你的年龄是多少，如果是偶数还是奇数，你仍然会得到survive=false。有什么问题吗？

函数中的变量是局部变量，

age

在函数之外。 因此，您需要在函数中使用

global

关键字作为

def survival（）：
全球时代
全球生存
如果年龄%2==0：
生存=错误
其他：
生存=真实

其次，您将年龄输入作为字符串，当您使用运算符时，这将导致

类型错误。您需要将其键入整数

age=int（age）
或
age=int（input（））

最后，我建议您在函数中传递值，如@juanpa.arrivillaga所说：


def survival（）：
年龄=整数（输入（）
生存=错误

或


def生存期（年龄，生存期=假）：
更改此代码块：

survive = False   # Useless statement -- you replace the value on the following main-program line

def survival():
  if age%2 == 0:
    survive = False    # No need to set a variable; just return the Boolean value
  else:
    survive = True
    
survival()    # Make this line save a return value

为此：

def survival():
    return age%2 == 1

survive = survival()

此外，我认为你需要更多的练习与布尔人。切勿将变量与布尔常量进行比较：请改用逻辑运算符。你在哪里

if survive == False:

取代

if not survive:

更好的是，颠倒生存检查的逻辑：

def kill_me():
    return age%2 == 0

sudden_death = kill_me()

...

if sudden_death:
    print("Cthulhu rises through the floor; his presence destroys your very soul.")

解决这个问题的方法如下，希望能有所帮助

age = int(input ("Type in your age\n"))
print("You're bored during quarantine and decide to go visit a haunted house alone. You 
visit the house, open the door, and walk in.")
print("You are in front of a creepy door in a hallway.")
print("What do you want to do?")
action = input ("Type: in, left, or right. Then click OK or press enter\n")

def survival(age=age):
  if age%2 == 0:
    return False
  else:
    return True

if action == "in":
  print("You choose to go in.") 
    if survival() == False:
      print("A monster pops out of the corner and eats you!")
    else:
      print("You turn the light on and realize that this is just an old bathroom. Gross.")
if action == "left":
  print("You choose to turn left.")
  print("A ghost appears at the end of the hall.")
  if survival() == False:
    print("The ghost chases you down and haunts your soul forever!")
  else:
    print("Your eyes mistook you, it was a spiderweb.")
if action == "right":
  print("You choose to turn right")
  print("A greenish light is visible in the distance")
  if survival() == False:
    print("The light gets brighter and brighter, and you realize it was the headlamp of a ghost coal miner!")
  else:
    print("You go to check out the light, turns out it's some old christmas lighting still plugged in.")

if survival() == False:
  print("May your soul rest eternally as you join the other ghosts at the haunted house.")
else:
  print("You survived your stay at the haunted house and apparently it's just a house.")

只需在代码中编辑以下内容

您可以输入年龄作为字符串。在Python中，input（）返回字符串值。您应该将输入值转换为整数。为此，可以使用int（）方法

年龄=整数（输入（“输入您的年龄”））


或者

在生存函数中使用年龄和生存。但两者都是在生存函数之外定义的。因此，在生存函数中使用global关键字。所以，代码应该被更正如下：
因为函数merel创建了一个局部变量。您需要使用
global my_variable
，以使助理在全局范围内执行操作。但你不应该。相反，将函数所需的值作为参数传递给函数，并从函数外部返回所需的值。不要使用可变的、全局的state@juanpa.arrivillaga对不起，我是python新手，我不太懂。所以我需要在函数中声明生存布尔值？
age = input ("Type in your age")
age = int(age)

def survival():
  global survive
  global age
  if age%2 == 0:
    survive = False
  else:
    survive = True