python urlopen SSL: CERTIFICATE_VERIFY_FAILED

1.使用ssl創建未經驗證的上下文，在urlopen中傳入上下文參數

import ssl
import urllib2

context = ssl._create_unverified_context()
print urllib2.urlopen("https://www.12306.cn/", context=context).read()

 

2.全局取消證書驗證

import ssl

import urllib2
ssl._create_default_https_context = ssl._create_unverified_context
print urllib2.urlopen("https://www.12306.cn/mormhweb/").read()