引用與Python中的局部變量名稱相同的全局變量

Question

我是python的新手，我們如何引用與本地名稱相同的全局變量。

spam = 'global spam' 
def scope_test(): 
    spam = 'local spam' 
    print(spam) 
    # access global spam and print or assign to the local spam 
    # print(global.spam) 
    # local.spam = global.spam (something like this) 

scope_test() 

Answer 1

這是不推薦的，我回答它的緣故，如果你好奇地問什麼/做到這一點：

Python 3.5.2 
>>> spam = 'global spam' 
>>> def scope_test(): 
..  spam = 'local spam' 
..  print(spam) 
..  # access global spam and print or assign to the local spam 
..  print(globals()['spam']) 
..  spam = globals()['spam'] 
..  print(spam) 
..  
>>> scope_test() 

輸出：

local spam 
global spam 
global spam