今天在用pip1.5.6安装flask-mongoengine的时候报错退出
我执行的命令是

bashpip install flask-mongoengine

返回错误是

bashDownloading/unpacking flask-mongoengine Cleaning up... Exception: Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main status = self.run(options, args) File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 278, in run requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle) File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1177, in prepare_files url = finder.find_requirement(req_to_install, upgrade=self.upgrade) File "/usr/lib/python2.7/dist-packages/pip/index.py", line 194, in find_requirement page = self._get_page(main_index_url, req) File "/usr/lib/python2.7/dist-packages/pip/index.py", line 568, in _get_page session=self.session, File "/usr/lib/python2.7/dist-packages/pip/index.py", line 670, in get_page resp = session.get(url, headers={"Accept": "text/html"}) File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 468, in get return self.request('GET', url, **kwargs) File "/usr/lib/python2.7/dist-packages/pip/download.py", line 237, in request return super(PipSession, self).request(method, url, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 456, in request resp = self.send(prep, **send_kwargs) File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 559, in send r = adapter.send(request, **kwargs) File "/usr/lib/python2.7/dist-packages/requests/adapters.py", line 327, in send timeout=timeout File "/usr/lib/python2.7/dist-packages/urllib3/connectionpool.py", line 491, in urlopen conn = self._get_conn(timeout=pool_timeout) File "/usr/lib/python2.7/dist-packages/urllib3/connectionpool.py", line 230, in _get_conn return conn or self._new_conn() File "/usr/lib/python2.7/dist-packages/urllib3/connectionpool.py", line 680, in _new_conn return self._prepare_conn(conn) File "/usr/lib/python2.7/dist-packages/urllib3/connectionpool.py", line 653, in _prepare_conn conn.connect() File "/usr/lib/python2.7/dist-packages/urllib3/connection.py", line 205, in connect self._tunnel() File "/usr/lib/python2.7/httplib.py", line 780, in _tunnel line = response.fp.readline(_MAXLINE + 1) TypeError: readline() takes exactly 1 argument (2 given)

我看traceback怀疑是标准库的bug，就google了一下，发现了一个github上的issue,场景不一样但是引发了同样的bug。这个issue最后讨论的结论是这确实是个bug，但是相关的patch已经merge了，就是说问题应该已经解决了。我在issue后面回复了我的问题，不过还没有得到解决。不知道有没有哪位遇到过类似的问题并且已经解决了？
我的python版本是2.7.9，pip版本是1.5.6，系统是ubuntu14.10.