我正在尝试将Github API与httplib2一起使用。但是当我向它的端点发出请求时，它给了我以下错误：

import httplib2
h = httplib2.Http()
h.request('https://api.github.com/gists')
# OUT: Traceback (most recent call last):
# OUT:   File "<input>", line 1, in <module>
# OUT:   File "/usr/local/lib/python2.7/dist-packages/httplib2/__init__.py", line 1570, in request
# OUT:     (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
# OUT:   File "/usr/local/lib/python2.7/dist-packages/httplib2/__init__.py", line 1317, in _request
# OUT:     (response, content) = self._conn_request(conn, request_uri, method, body, headers)
# OUT:   File "/usr/local/lib/python2.7/dist-packages/httplib2/__init__.py", line 1252, in _conn_request
# OUT:     conn.connect()
# OUT:   File "/usr/local/lib/python2.7/dist-packages/httplib2/__init__.py", line 1044, in connect
# OUT:     raise SSLHandshakeError(e)
# OUT: SSLHandshakeError: [Errno 1] _ssl.c:504: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed

我可以使用以下解决方法：

h = httplib2.Http(disable_ssl_certificate_validation=True)
h.request('https://api.github.com/gists')
# OUT: ({'content-length': '58443' ...

但这仍然是一种解决方法，我想知道如何使用httplib2为Github正确验证SSL证书。在Google上搜索时，我发现我应该更新cacerts.txt该库，但不知道如何更新Github的证书授权。还是通过https发送请求而没有证书验证问题的其他正确方法？