pip install retry
自动尝试5次，每次间隔2秒
from retry import retry @retry(tries=5, delay=2) def test(): print 1 a = 5/0 test()
def retry(exceptions=Exception, tries=-1, delay=0, max_delay=None, backoff=1, jitter=0, logger=logging_logger): """Return a retry decorator. :param exceptions: an exception or a tuple of exceptions to catch. default: Exception. :param tries: the maximum number of attempts. default: -1 (infinite). :param delay: initial delay between attempts. default: 0. :param max_delay: the maximum value of delay. default: None (no limit). :param backoff: multiplier applied to delay between attempts. default: 1 (no backoff). :param jitter: extra seconds added to delay between attempts. default: 0. fixed if a number, random if a range tuple (min, max) :param logger: logger.warning(fmt, error, delay) will be called on failed attempts. default: retry.logging_logger. if None, logging is disabled. """