Nginx废除支持TSL1.0和TSL1.1导致Python3网络请求时出现CERTIFICATE_VERIFY_FAILED处理

nginx配置不支持TSL1.0和TSL1.1后出现:

error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired 

把代码中的

AsyncHTTPClient(max_clients=config.async_http_client_max_clients).fetch(
                HTTPRequest(url=url,
                            method=method,
                            body=body,
                            headers=self.headers,
                            ssl_options={"ssl_version": ssl.PROTOCOL_TLSv1}, 
                            follow_redirects=False),
                self._on_proxy)

ssl_options={"ssl_version": ssl.PROTOCOL_TLSv1}

改为:

ssl_options={"ssl_version": ssl.PROTOCOL_SSLv23}