ImportError: No module named urllib3 when installing pip
<p>I have an issue with virtualenvwrapper that requires reinstalling pip as the first step, and I am getting a strange complaint about urllib3:</p>

<pre><code>$ python get-pip.py 
Traceback (most recent call last):
  File "get-pip.py", line 19177, in &lt;module&gt;
    main()
  File "get-pip.py", line 194, in main
    bootstrap(tmpdir=tmpdir)
  File "get-pip.py", line 82, in bootstrap
    import pip
  File "/tmp/tmppQTQty/pip.zip/pip/__init__.py", line 16, in &lt;module&gt;
  File "/tmp/tmppQTQty/pip.zip/pip/vcs/mercurial.py", line 9, in &lt;module&gt;
  File "/tmp/tmppQTQty/pip.zip/pip/download.py", line 39, in &lt;module&gt;
  File "/tmp/tmppQTQty/pip.zip/pip/_vendor/requests/__init__.py", line 61, in &lt;module&gt;
  File "/tmp/tmppQTQty/pip.zip/pip/_vendor/requests/packages/__init__.py", line 29, in &lt;module&gt;
ImportError: No module named urllib3
</code></pre>

<p>when I search the pip file <code>get-pip.py</code>, I don't see any reference to urllib3. </p>

<p>I have python2.6, py2.7, and py3.4 on the machine</p>

<pre><code>cchilders:~/Downloads 
$ which python
/usr/local/bin/python

cchilders:~/Downloads 
$ which pip
/usr/local/bin/pip


cchilders:/usr/local/bin 
$ ls
2to3           easy_install-2.7  ipython   pip3              smtpd.py
celery         fop               ipython2  pip3.5            uncompyle2
celerybeat     grunt             jsonlint  pydoc             virtualenv
celeryd        idle              pbr       python            virtualenv-clone
celeryd-multi  ipdb              pip       python2.6         virtualenvwrapper_lazy.sh
charm          iptest            pip2      python2.6-config  virtualenvwrapper.sh
easy_install   iptest2           pip2.7    python-config
</code></pre>

<p>Python is defaulting to 2.6.9 which isn't what I want:</p>

<pre><code>cchilders:/usr/bin 
$ python
Python 2.6.9
</code></pre>

<p>I do not have anaconda on the machine, which caused someone else's problem. Any advice what to do now appreciated, thank you</p>