retry decorator for python like the ruby one

retry decorator

class retry(bject):
    """
    Decorator to retry function calls in case they raise exceptions
       times - retries times (0 means only called once, like this decorator was
               not used at all)
       sleep - sleep time to wait aftera failure
       debug - whether print to stdout info or not
    """
    def __init__(self, times=1, sleep=0, debug=False):
        self.times = times
        self.sleep = sleep
        self.debug = debug

    def __call__(self, f):
        def wrapper(*args, **kwargs):
            exception = None
            for i in range(self.times + 1):
                try:
                    return f(*args, **kwargs)
                except Exception, error:
                    exception = error
                    if self.debug:
                        print "Fail (%d): (%s)" % ((i + 1), str(error))
                    time.sleep(self.sleep)
            raise exception
        return wrapper