Python 装饰器实现的retry 出错重试

# 可以用来处理HTTP超时，等需要重试的错误方法

import requests

def retry(attempt):
    def decorator(func):
        def wrapper(*args, **kw):
            att = 0
            while att < attempt:
                try:
                    return func(*args, **kw)
                except Exception as e:
                    att += 1
        return wrapper
    return decorator

# 重试次数
@rety(attempt=3)
def get_response(url):
    r = requests.get('http://www.oschina.net')
    return r.content