Question

我实现了以下重试装饰器。

def retry(delay=10, retries=4):
    def retry_decorator(f):
        @wraps(f)
        def f_retry(*args, **kwargs):
            while retries > 1:
                try:
                    return f(*args, **kwargs)
                except Exception as e:
                    msg = "Exception: {}, Retrying in {} seconds...'.format(e, delay)"
                    print(msg)
                    time.sleep(delay)
                    retries -= 1
            return f(*args, **kwargs)

        return f_retry

    return retry_decorator

我得到未定义重试的错误。但是，在函数定义中提到了重试。我无法弄清楚这里出了什么问题。任何帮助将不胜感激。

Answer 1

我通过收集字典中的重试和延迟变量，然后在函数内部使用变量来使其工作。

def retry(delay=10, retries=4):
    def retry_decorator(f):
        @wraps(f)
        def f_retry(*args, **kwargs):
            opt_dict = {'retries': retries, 'delay': delay}
            while opt_dict['retries'] > 1:
                try:
                    return f(*args, **kwargs)
                except Exception as e:
                    msg = "Exception: {}, Retrying in {} seconds...".format(e, delay)
                    print(msg)
                    time.sleep(opt_dict['delay'])
                    opt_dict['retries'] -= 1
            return f(*args, **kwargs)

        return f_retry

    return retry_decorator

重试装饰器实现，未定义重试

1 个答案: