- 当前作用域为函数作用域，某变量名指向一个局部变量，而此变量在被使用前尚未绑定到特定值，将会引发
**UnboundLocalError**错误 e.g.
var = 100
def func():
var = var + 1 #此时使用var将var视为局部变量
func()
Traceback (most recent call last):
File "D:\python\程序包\lib\code.py", line 90, in runcode
exec(code, self.locals)
File "", line 1, in
File "", line 2, in func
UnboundLocalError: local variable 'var' referenced before assignment
var = 100
def func():
print(var) #var = 1 var为局部变量 此时使用时 var尚未绑定特定值
var = 1
func()
Traceback (most recent call last):
File "D:\python\程序包\lib\code.py", line 90, in runcode
exec(code, self.locals)
File "", line 1, in
File "", line 2, in func
UnboundLocalError: local variable 'var' referenced before assignment
Original: https://www.cnblogs.com/jianhui-zhou/p/16365712.html
Author: 剑辉_周
Title: python变量作用域查找顺序以及可能出现的问题
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