python|python 重试策略 python重试策略

python 有一个非常有意思包retrying，可以用来自动化的进行重试操作，支持的条件也比较多，基本上能满足我的日常需求。
在没有用retrying之前，我的代码结构是这样的：

try_times = 2 response = None while True: try: response = request.post(URL) except Exception as e: if try_times > 0: time.sleep(3) try_times -= 1 else: logger.info(response.json()) if response.json()['errno'] == 1000: raise TimeoutError raise Exception("failed")

代码可以说是非常的不优雅。retrying支持使用装饰器来对函数单元进行处理。改造后为

from retrying import retry def retry_TimeoutError(exception): return isinstance(exception, TimeoutError)@retry(stop_max_attempt_number=3, wait_fixed=3000, retry_on_exception=retry_TimeoutError) def retry_request_translate(self, content, input_len): try: response = requests.post(url, json=payload) return result except Exception as e: if response is not None: if response.json()['errno'] == 1000: raise TimeoutError raise Exception("failed")

retry的参数支持: