python lib inspect, could help check the target function's caller

function.py

import copy
import os
from importlib import import_module
from importlib.util import find_spec as importlib_find
import inspect


def import_string(dotted_path):
    """
    Import a dotted module path and return the attribute/class designated by the
    last name in the path. Raise ImportError if the import failed.
    """
    try:
        print("-------------------------------------------------")
        curframe = inspect.currentframe()
        calframe = inspect.getouterframes(curframe, 4)
        print('---- called from ' + calframe[1][3] + ' in ' + calframe[1][4][0][6: -2])
        print(dotted_path)
        print("-------------------------------------------------")
        module_path, class_name = dotted_path.rsplit('.', 1)
    except ValueError as err:
        raise ImportError("%s doesn't look like a module path" % dotted_path) from err

    module = import_module(module_path)

    try:
        return getattr(module, class_name)
    except AttributeError as err:
        raise ImportError('Module "%s" does not define a "%s" attribute/class' % (
            module_path, class_name)
        ) from err