>>> import pandas as pd
>>> from datetime import date
>>> from mpl_finance import quotes_historical_yahoo_ochl
>>> today = date.today()
>>> start = (today.year-1,today.month,today.day)
>>> quotes = quotes_historical_yahoo_ochl('AXP',start,today)
Traceback (most recent call last):
  File "/usr/lib/python3.4/urllib/request.py", line 1183, in do_open
    h.request(req.get_method(), req.selector, req.data, headers)
  File "/usr/lib/python3.4/http/client.py", line 1137, in request
    self._send_request(method, url, body, headers)
  File "/usr/lib/python3.4/http/client.py", line 1182, in _send_request
    self.endheaders(body)
  File "/usr/lib/python3.4/http/client.py", line 1133, in endheaders
    self._send_output(message_body)
  File "/usr/lib/python3.4/http/client.py", line 963, in _send_output
    self.send(msg)
  File "/usr/lib/python3.4/http/client.py", line 898, in send
    self.connect()
  File "/usr/lib/python3.4/http/client.py", line 871, in connect
    self.timeout, self.source_address)
  File "/usr/lib/python3.4/socket.py", line 494, in create_connection
    for res in getaddrinfo(host, port, 0, SOCK_STREAM):
  File "/usr/lib/python3.4/socket.py", line 533, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.4/dist-packages/mpl_finance-0.10.0-py3.4.egg/mpl_finance.py", line 405, in quotes_historical_yahoo_ochl
  File "/usr/local/lib/python3.4/dist-packages/mpl_finance-0.10.0-py3.4.egg/mpl_finance.py", line 495, in _quotes_historical_yahoo
  File "/usr/local/lib/python3.4/dist-packages/mpl_finance-0.10.0-py3.4.egg/mpl_finance.py", line 354, in fetch_historical_yahoo
  File "/usr/lib/python3.4/urllib/request.py", line 161, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.4/urllib/request.py", line 464, in open
    response = self._open(req, data)
  File "/usr/lib/python3.4/urllib/request.py", line 482, in _open
    '_open', req)
  File "/usr/lib/python3.4/urllib/request.py", line 442, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.4/urllib/request.py", line 1211, in http_open
    return self.do_open(http.client.HTTPConnection, req)
  File "/usr/lib/python3.4/urllib/request.py", line 1185, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [Errno -2] Name or service not known>
>>>