title: How to completely uninstall and re-install Pillow?
body: <p>I am trying to reinstall Pillow on my Server and I am getting this:</p>
  
  <pre><code>...
  Proceed (y/n)? y
    Successfully uninstalled Pillow-4.0.0
  (myproject)$ pip install --upgrade --force-reinstall Pillow
  Collecting Pillow
    Using cached Pillow-4.0.0-cp27-cp27mu-manylinux1_x86_64.whl
  Collecting olefile (from Pillow)
    Using cached olefile-0.44.zip
  Building wheels for collected packages: olefile
    Running setup.py bdist_wheel for olefile ... error
    Complete output from command /home/user/.virtualenvs/myproject/bin/python2.7 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-C7Frjt/olefile/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/tmpToYPN3pip-wheel- --python-tag cp27:
    usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
       or: -c --help [cmd1 cmd2 ...]
       or: -c --help-commands
       or: -c cmd --help
  
    error: invalid command 'bdist_wheel'
  
    ----------------------------------------
    Failed building wheel for olefile
    Running setup.py clean for olefile
  Failed to build olefile
  Installing collected packages: olefile, Pillow
    Found existing installation: olefile 0.44
      Uninstalling olefile-0.44:
        Successfully uninstalled olefile-0.44
    Running setup.py install for olefile ... done
  Successfully installed Pillow-4.0.0 olefile-0.44
  
  (myproject)$ python
  &gt;&gt;&gt; import Pillow
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named Pillow
  </code></pre>
  
  <p>What am I doing wrong?</p>
  
  <p>EDIT: I also tried to remove Pillow and PIL directories but I still don't get it to work:</p>
  
  <pre><code>(myproject)$ rm -rf PIL
  (myproject)$ rm -rf Pillow-4.0.0.dist-info/
  (myproject)$ pip install Pillow
  Collecting Pillow
    Using cached Pillow-4.0.0-cp27-cp27mu-manylinux1_x86_64.whl
  Requirement already satisfied: olefile in ./.virtualenvs/myproject/lib/python2.7/site-packages (from Pillow)
  Installing collected packages: Pillow
  Successfully installed Pillow-4.0.0
  (myproject)$ python
  Python 2.7.5 (default, Nov  6 2016, 00:28:07) 
  [GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt; import Pillow
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named Pillow
  &gt;&gt;&gt; 
  </code></pre>