Python 3:UnboundLocalError:分配前引用的局部变量 [英] Python 3: UnboundLocalError: local variable referenced before assignment

问题描述

下面的代码给出了错误UnboundLocalError: local variable 'Var1' referenced before assignment:

The following code gives the error UnboundLocalError: local variable 'Var1' referenced before assignment:

Var1 = 1
Var2 = 0
def function(): 
    if Var2 == 0 and Var1 > 0:
        print("Result One")
    elif Var2 == 1 and Var1 > 0:
        print("Result Two")
    elif Var1 < 1:
        print("Result Three")
    Var1 =- 1
function()

我该如何解决这个问题?感谢您的帮助！

How can I fix this? Thanks for any help!

推荐答案

你可以通过传递参数而不是依赖全局变量来解决这个问题

You can fix this by passing parameters rather than relying on Globals

def function(Var1, Var2): 
    if Var2 == 0 and Var1 > 0:
        print("Result One")
    elif Var2 == 1 and Var1 > 0:
        print("Result Two")
    elif Var1 < 1:
        print("Result Three")
    return Var1 - 1
function(1, 1)

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