pythonリトライするデコレータ

from functools import wraps
import time


def retry_decorator(retry_num: int, sleep_sec: int):
    """
    リトライするデコレータを返す
    :param retry_num: リトライ回数
    :param sleep_sec: リトライするまでにsleepする秒数
    :return: デコレータ
    """

    def _retry(func):
        @wraps(func)
        def wrapper(*args, **kwargs):
            for retry_count in range(1, retry_num + 1):
                try:
                    ret = func(*args, **kwargs)
                    return ret
                except Exception as exp:  # pylint: disable=broad-except
                    if retry_count == retry_num:
                        print(f"Retry_count over ({retry_count}/{retry_num})")
                        raise Exception from exp
                    else:
                        print(f"Retry after {sleep_sec} sec ({retry_count}/{retry_num}). Error = {exp}")
                        time.sleep(sleep_sec)

        return wrapper

    return _retry


@retry_decorator(retry_num=3, sleep_sec=1)
def hoge():
    raise Exception("fail")


if __name__ == "__main__":
    hoge()

実行結果

Retry after 1 sec (1/3). Error = fail
Retry after 1 sec (2/3). Error = fail
Retry_count over (3/3)
Traceback (most recent call last):
  File "retry.py", line 18, in wrapper
    ret = func(*args, **kwargs)
  File "retry.py", line 35, in hoge
    raise Exception("fail")
Exception: fail

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "retry.py", line 39, in <module>
    hoge()
  File "retry.py", line 23, in wrapper
    raise Exception from exp
Exception