从调用者的全局变量中获取变量.什么是框架对象？

Question

检查模块的文档说:

当以下函数返回"帧记录"时,每个记录都是一个命名元组FrameInfo(frame, filename, lineno, function, code_context, index).元组包含框架对象,文件名,当前行的行号,函数名称,源代码中的上下文行列表以及该列表中当前行的索引.

什么是"框架对象"？我希望使用这个框架对象从调用者的角度获取变量的值globals():

import my_util

a=3
my_util.get_var('a')

和my_util.py

import inspect

def get_var(name):
    print(inspect.stack()[1][0])

Answer 1

来自https://docs.python.org/3/library/inspect.html#types-and-members:

frame   f_back      next outer frame object (this frame’s caller)
        f_builtins  builtins namespace seen by this frame
        f_code      code object being executed in this frame
        f_globals   global namespace seen by this frame
        f_lasti     index of last attempted instruction in bytecode
        f_lineno    current line number in Python source code
        f_locals    local namespace seen by this frame
        f_restricted    0 or 1 if frame is in restricted execution mode
        f_trace     tracing function for this frame, or None

因此,在my_util.py中获取一些全局变量:

import inspect

def get_var(name):
    print(inspect.stack()[1][0].f_globals[name])