python使用第三方库request访问https报错

摘要：使用pip安装request插件,访问https时,有时会报出SNIMissingWarning和InsecurePlatformWarning警告

报错详情：SNIMissingWarning: An HTTPS request has been made, but the SNI (Subject Name Indication) extension to TLS is not available on this platform.
This may cause the server to present an incorrect TLS certificate, which can cause validation failures. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#snimissingwarning.

urllib3给了我们两种建议,升级你的python27版本至python2.7.9以上,或者使用pyOpenSSL。

使用pyOpenSSL，执行

pip install urllib3[secure]，问题解决

在搜解决方案时，有的同学在安装pyopenssl后,依旧会出现上述问题,有大佬说执行以下代码可解决：（没试过，不只是否有效，先记下来以后备用吧）

pip install requests[security]
pip install pyopenssl ndg-httpsclient pyasn1