AttributeError的：“功能”对象有没有属性“my_args”

Question

我怎样才能在主要

 
# test1.py 

#!/usr/bin/env python 

def main(): 
    print 'main function' 
    one() 

def one(): 
    print 'one function' 
    my_args = ["QA-65"] 

def two(): 
    print 'two function' 

if __name__ == "__main__": 
    main() 
    getattr(my_args, pop) 

Answer 1

你可以，如果你return他们one()：

#!/usr/bin/env python 

def main(): 
    print 'main function' 
    args = one() # returns my_args, which i'm assigning to args 
    print 'i got args from one():', args 
    print args.pop() 

def one(): 
    print 'one function' 
    my_args = ["QA-65"] 
    return my_args 

def two(): 
    print 'two function' 

if __name__ == "__main__": 
    main() 
    #getattr(my_args, pop) 
    # ^^^ Moved this up to main() ^^^ 

输出：

main function 
one function 
i got args from one(): ['QA-65'] 
QA-65 

Answer 2

您可以访问my_args，列表数据类型做到这一点使用global。

#!/usr/bin/env python 

def main(): 
    print 'main function' 
    one() 

def one(): 
    print 'one function' 
    global my_args 
    my_args = ["QA-65"] 

def two(): 
    print 'two function' 

if __name__ == "__main__": 
    main() 
    print my_args.pop() 

Demo。

仅仅因为你可以并不意味着你应该！