我对编程很陌生（如果我没有正确提出这个问题，很抱歉）。这是来自 LPTHW 练习 36：
我的错误：
Traceback (most recent call last):
File "ex36.py", line 329, in <module>
start()
File "ex36.py", line 149, in start
arena()
File "ex36.py", line 161, in arena
if stealth == True:
NameError: global name 'stealth' is not defined
我的假设：我认为“隐身”是在前面的函数 start() 中定义的，但该定义没有延续到 arena()。我该如何解决它，为什么从一个功能“隐身”不延续到另一个功能？
我的代码（正在进行的基于文本的游戏）：
from sys import argv
script, enemy = argv
...
def start():
print """ Choose a skill to train in
"""
stealth = False
gun = False
knife = False
heal = False
skill = raw_input("> ")
if 'gun' in skill:
print """
"""
gun = True
skill = gun
...
else:
dead()
arena()
def arena():
print """ You enter the arena. Will you:
hide, hunt for food, or search for water?
"""
path = raw_input("> ")
if "hide" in path:
print """ Hide
"""
if stealth == True:
print """ Witness
"""
witness()
else:
battle()
...
else:
print """ Dead
"""
dead()
start()
非常感谢所有建议。谢谢您的帮助。