pip install - Connection reset by peer

Question

When I try to install lxml using pip I had the exception "Connection reset by peer":

Downloading/unpacking lxml
  Downloading lxml-3.0.1.tar.gz (3.2Mb): 643Kb downloaded
Exception:
Traceback (most recent call last):
  File "/home/dummyuser/work/virt-dev-env/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/basecommand.py", line 104, in main
    status = self.run(options, args)
  File "/home/dummyuser/work/virt-dev-env/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/commands/install.py", line 245, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/home/dummyuser/work/virt-dev-env/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/req.py", line 985, in prepare_files
    self.unpack_url(url, location, self.is_download)
  File "/home/dummyuser/work/virt-dev-env/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/req.py", line 1109, in unpack_url
    retval = unpack_http_url(link, location, self.download_cache, self.download_dir)
  File "/home/dummyuser/work/virt-dev-env/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/download.py", line 451, in unpack_http_url
    download_hash = _download_url(resp, link, temp_location)
  File "/home/dummyuser/work/virt-dev-env/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/download.py", line 368, in _download_url
    chunk = resp.read(4096)
  File "/usr/lib/python2.7/socket.py", line 380, in read
    data = self._sock.recv(left)
  File "/usr/lib/python2.7/httplib.py", line 561, in read
    s = self.fp.read(amt)
  File "/usr/lib/python2.7/socket.py", line 380, in read
    data = self._sock.recv(left)
error: [Errno 104] Connection reset by peer

This only happened when installing lxml, other modules got installed with pip no problems. Anybody had the same problem?

Answer 1

Try to choose another PyPI mirror, either directly:

pip install -i http://e.pypi.python.org/simple lxml

Or by letting pip find the best mirror:

pip install --use-mirrors lxml

Answer 2

In my case, was an ipv6 issue. Some mirrors still don't have full ipv6 access.

Disable ipv6 and try again.