Python 3.4.3 (default, Feb 26 2015, 11:16:38)
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.56)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from slackclient import SlackClient
>>>
>>> token = "xoxp-28192348123947234198234"      # found at https://api.slack.com/web#authentication
>>> sc = SlackClient(token)
>>> sc.api_call("api.test")
Traceback (most recent call last):
  File "/sw/lib/python3.4/urllib/request.py", line 1182, in do_open
    h.request(req.get_method(), req.selector, req.data, headers)
  File "/sw/lib/python3.4/http/client.py", line 1088, in request
    self._send_request(method, url, body, headers)
  File "/sw/lib/python3.4/http/client.py", line 1126, in _send_request
    self.endheaders(body)
  File "/sw/lib/python3.4/http/client.py", line 1084, in endheaders
    self._send_output(message_body)
  File "/sw/lib/python3.4/http/client.py", line 922, in _send_output
    self.send(msg)
  File "/sw/lib/python3.4/http/client.py", line 857, in send
    self.connect()
  File "/sw/lib/python3.4/http/client.py", line 1231, in connect
    server_hostname=server_hostname)
  File "/sw/lib/python3.4/ssl.py", line 365, in wrap_socket
    _context=self)
  File "/sw/lib/python3.4/ssl.py", line 583, in __init__
    self.do_handshake()
  File "/sw/lib/python3.4/ssl.py", line 810, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:600)