为什么我的全局变量不起作用？ (Python)

Question

我正在为学校制作一个基于文本的游戏，我希望它具有个性化的名称功能，但是每当我通过定义变量的函数时，其他函数只使用原始值，这是 0。这是一个例子：

global name = 0 #this part is at the top of the page, not actually just above the segment
def naming();
 print("A long, long time ago, there was a person who was born very ordinary, but would live to become very extraordinary.\n")
  time.sleep(2)
  while True:
    name=input("Who are you? Give me your name.\n")
    choice = input(f'You said your name was {name}, correct?\n')
    if choice in Yes:
      prologue();
    else:
      return

def prologue():
  print(f'Very well, {name}. You were born with a strange gift that nobody could comprehend, at the time. You were born with the Favor of the Gods.')

这是我拥有的确切代码段，当我点击“运行”时，它工作正常，直到 def prologue(): 我已经排除了它是其他东西的可能性，因为在复制器 window 它说“未定义名称 'name'”

Answer 1

global 在内部函数中使用，以指示将被视为局部变量的名称应该改为全局名称。

def naming():
    global name

    ...

def prologue():
    print(f'Very well, {name}. ...')

只要在调用name之前不调用prologue，就不需要在全局范围内初始化name； naming里面的赋值就够了。

此外，您的意思是 choice in ["Yes"] 或者，更好的是，choice == "Yes"

Answer 2

从名称中删除全局，然后它应该可以工作

Answer 3

这是一个工作示例，但将名称传递给 prologue 函数而不是使用全局变量不是更好吗？这是另一个主题，但你必须避免使用 global.

import time

name = 0 #this part is at the top of the page, not actually just above the segment
def naming():
    global name
    print("A long, long time ago, there was a person who was born very ordinary, but would live to become very extraordinary.\n")
    time.sleep(2)
    while True:
        name=input("Who are you? Give me your name.\n")
        choice = input(f'You said your name was {name}, correct?\n')
        if choice == "Yes":
          prologue()
        else:
          return

def prologue():
    global name
    print(f'Very well, {name}. You were born with a strange gift that nobody could comprehend, at the time. You were born with the Favor of the Gods.')


if __name__ == '__main__':
    naming()

为什么我的全局变量不起作用？ (Python)

Why is my global variable not working? (Python)

python

global-variables

text-based