pythonでエラー出るんだけど解決方法知りませんか？

>>> import urllib2
>>> urllib2.urlopen("https://secure.nicovideo.jp/";)

Traceback (most recent call last):
File "/usr/lib/python2.7/urllib2.py"
line 126, in urlopen　return _opener.open(url, data, timeout)
line 400, in open　response = self._open(req, data)
line 418, in _open　'_open', req)
line 378, in _call_chain　result = func(*args)
line 1215, in https_open　return self.do_open(httplib.HTTPSConnection, req)
line 1177, in do_open　raise URLError(err)

urllib2.URLError: <urlopen error [Errno 104] Connection reset by peer>