>>> import itchat
>>> itchat.auto_login(enableCmdQR=2)
Traceback (most recent call last):
  File "/usr/local/python27/lib/python2.7/site-packages/itchat/utils.py", line 125, in test_connect
    r = requests.get(config.BASE_URL)
  File "/usr/local/python27/lib/python2.7/site-packages/requests/api.py", line 72, in get
    return request(‘get‘, url, params=params, **kwargs)
  File "/usr/local/python27/lib/python2.7/site-packages/requests/api.py", line 58, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/local/python27/lib/python2.7/site-packages/requests/sessions.py", line 502, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/python27/lib/python2.7/site-packages/requests/sessions.py", line 612, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/python27/lib/python2.7/site-packages/requests/adapters.py", line 514, in send
    raise SSLError(e, request=request)
SSLError: ("bad handshake: Error([(‘SSL routines‘, ‘SSL3_GET_SERVER_CERTIFICATE‘, ‘certificate verify failed‘)],)",)

You can‘t get access to internet or wechat domain, so exit.

[root@host1 ~]# pip uninstall -y certifi
[root@host1 ~]# pip install certifi==2015.04.28