英文文档：

globals

() Return a dictionary representing the current global symbol table. This is always the dictionary of the current module (inside a function or method, this is the module where it is defined, not the module from which it is called).

　　返回当前作用域内全局变量和其组成的字典

说明： 　　1. 返回当前作用域内全局变量的字典。

>>> globals(){'__spec__': None, '__package__': None, '__builtins__': 
     
      , '__name__': '__main__', '__doc__': None, '__loader__': 
      
       }>>> a = 1>>> globals() #多了一个a{'__spec__': None, '__package__': None, '__builtins__': 
       
        , 'a': 1, '__name__': '__main__', '__doc__': None, '__loader__': 
        
         }