#!/usr/bin/env python3

from datetime import datetime
import functools
import logging


logger = logging.getLogger(__file__)


def invocation_logged(func):
    @functools.wraps(func)
    def wrapper(*args, **kwargs):
        logger.debug(f'Entered {func.__qualname__}')
        ret = func(*args, **kwargs)
        logger.debug(f'Exited {func.__qualname__}')
        return ret

    return wrapper


# Test
# @invocation_logged
# def f(x):
#    print(x * x)
#    return x * x
#
# q = f(10)
# print(q)