模块的私有符号表和函数的全局符号选项卡

Question

阅读时 6. Modules，我遇到了

Each module has its own private symbol table, which is used as the global symbol table by all functions defined in the module. Thus, the author of a module can use global variables in the module without worrying about accidental clashes with a user’s global variables. On the other hand, if you know what you are doing you can touch a module’s global variables with the same notation used to refer to its functions, modname.itemname.

模块的“私有符号表”和函数“全局符号表”使我困惑。在

在Symbol table: Wikipedia中，它写着：

The Python programming language includes extensive support for creating and manipulating symbol tables.[2] Properties that can be queried include whether a given symbol is a free variable or a bound variable, whether it is block scope or global scope, whether it is imported, and what namespace it belongs to.

看起来有点复杂。在

如何理解私有和全局符号表，我可以打印它们吗？在

按照PM 2Ring的评论，我创建一个脚本：

#symbol_table.py
print(global())
$ python symbol_table.py
{'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <_frozen_importlib_external.SourceFileLoader object at 0x10bddf278>, '__spec__': None, '__annotations__': {}, '__builtins__': <module 'builtins' (built-in)>, '__file__': 'symbol_table.py', '__cached__': None}

{'__name__': '__main__', '__doc__': None, '是否被称为全局符号表？在