Python code without any return

noreturn.py

#### library mode
import inspect


def res_var_name(fname):
    return f"_{fname}_result_"


def result(value, offset=1):
    stack = inspect.stack()
    calframe = stack[offset]
    module = inspect.getmodule(calframe.frame)
    fname = calframe.function
    setattr(module, res_var_name(fname), value)


def load_result(func):
    result(
        getattr(inspect.getmodule(func), res_var_name(func.__name__)),
        offset=2,
    )


#### user code
def foo(arg):
    result(arg + 1)


def bar():
    foo(100)
    load_result(foo)
    print(_bar_result_)


bar()