title: Docker compose script complaining about a python module import
body: <p>Docker script <code>docker-compose --version</code> is now throwing a weird error and is complaining about a missing python module <code>ordered_dict</code>. Not sure why is this happening but previously it was working just fine. Not sure if its related but I installed <code>pip</code> for python and later installed <code>awscli</code> using the pip.</p>
  
  <p>Below is the stack trace I get on running <code>docker-compose --version</code></p>
  
  <pre><code>Traceback (most recent call last):
    File "/usr/bin/docker-compose", line 9, in &lt;module&gt;
      load_entry_point('docker-compose==1.8.0', 'console_scripts', 'docker-compose')()
    File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 484, in load_entry_point
      return get_distribution(dist).load_entry_point(group, name)
    File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2725, in load_entry_point
      return ep.load()
    File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2343, in load
      return self.resolve()
    File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2349, in resolve
      module = __import__(self.module_name, fromlist=['__name__'], level=0)
    File "/usr/lib/python2.7/dist-packages/compose/cli/main.py", line 14, in &lt;module&gt;
      from . import errors
    File "/usr/lib/python2.7/dist-packages/compose/cli/errors.py", line 9, in &lt;module&gt;
      from docker.errors import APIError
    File "/usr/lib/python2.7/dist-packages/docker/__init__.py", line 20, in &lt;module&gt;
      from .client import Client, AutoVersionClient, from_env # flake8: noqa
    File "/usr/lib/python2.7/dist-packages/docker/client.py", line 18, in &lt;module&gt;
      import requests
    File "/usr/lib/python2.7/dist-packages/requests/__init__.py", line 58, in &lt;module&gt;
      from . import utils
    File "/usr/lib/python2.7/dist-packages/requests/utils.py", line 26, in &lt;module&gt;
      from .compat import parse_http_list as _parse_list_header
    File "/usr/lib/python2.7/dist-packages/requests/compat.py", line 42, in &lt;module&gt;
      from .packages.urllib3.packages.ordered_dict import OrderedDict
  ImportError: No module named ordered_dict
  </code></pre>