title: Python module not found in virtualenv
body: <p>I've tried to install a python module:</p>
  
  <pre><code>virtualenv .
  source bin/activate
  pip install utmp
  </code></pre>
  
  <p>It seems to be installed:</p>
  
  <pre><code>(wtmp)chris@chris-nb:~/computer/wtmp$ find -iname utmp
  ./bin/utmp
  ./lib/python2.7/site-packages/utmp
  </code></pre>
  
  <p>But Python says it wasn't found:</p>
  
  <pre><code>(wtmp)chris@chris-nb:~/computer/wtmp$ ./wtmp.py
  Traceback (most recent call last):
    File "./wtmp.py", line 3, in &lt;module&gt;
      import utmp
  ImportError: No module named utmp
  </code></pre>
  
  <p>Is this a module issue? Did I do something wrong? </p>
  
  <p>If it matters, the OS is Ubuntu.</p>
  
  <p>Here's the re-install log:</p>
  
  <pre><code>(wtmp)chris@chris-nb:~/computer/wtmp$ pip install --upgrade --no-deps --force-reinstall utmp
  Downloading/unpacking utmp
    Downloading utmp-0.4.tar.gz
    Running setup.py (path:/home/chris/computer/wtmp/build/utmp/setup.py) egg_info for package utmp
      zip_safe flag not set; analyzing archive contents...
      flake8.reporter: module references __file__
      flake8.tests._test_warnings: module references __file__
      flake8.tests.test_integration: module references __file__
  
      Installed /home/chris/computer/wtmp/build/utmp/flake8-2.4.1-py2.7.egg
      Searching for six
      Reading https://pypi.python.org/simple/six/
      Best match: six 1.9.0
      Downloading https://pypi.python.org/packages/source/s/six/six-1.9.0.tar.gz#md5=476881ef4012262dfc8adc645ee786c4
      Processing six-1.9.0.tar.gz
      Writing /tmp/easy_install-oJJB7w/six-1.9.0/setup.cfg
      Running six-1.9.0/setup.py -q bdist_egg --dist-dir /tmp/easy_install-oJJB7w/six-1.9.0/egg-dist-tmp-1116oK
      no previously-included directories found matching 'documentation/_build'
      zip_safe flag not set; analyzing archive contents...
      six: module references __path__
  
      Installed /home/chris/computer/wtmp/build/utmp/six-1.9.0-py2.7.egg
      Searching for mccabe&gt;=0.2.1,&lt;0.4
      Reading https://pypi.python.org/simple/mccabe/
      Best match: mccabe 0.3.1
      Downloading https://pypi.python.org/packages/source/m/mccabe/mccabe-0.3.1.tar.gz#md5=9a1570c470ff5db678cc0c03d5c0c237
      Processing mccabe-0.3.1.tar.gz
      Writing /tmp/easy_install-uFdTms/mccabe-0.3.1/setup.cfg
      Running mccabe-0.3.1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-uFdTms/mccabe-0.3.1/egg-dist-tmp-Q139di
  
      Installed /home/chris/computer/wtmp/build/utmp/mccabe-0.3.1-py2.7.egg
      Searching for pep8&gt;=1.5.7,!=1.6.0,!=1.6.1,!=1.6.2
      Reading https://pypi.python.org/simple/pep8/
      Best match: pep8 1.5.7
      Downloading https://pypi.python.org/packages/source/p/pep8/pep8-1.5.7.tar.gz#md5=f6adbdd69365ecca20513c709f9b7c93
      Processing pep8-1.5.7.tar.gz
      Writing /tmp/easy_install-BdNCrK/pep8-1.5.7/setup.cfg
      Running pep8-1.5.7/setup.py -q bdist_egg --dist-dir /tmp/easy_install-BdNCrK/pep8-1.5.7/egg-dist-tmp-rrUWb1
      warning: no previously-included files matching '*.pyc' found under directory 'docs'
      warning: no previously-included files matching '*.pyo' found under directory 'docs'
      warning: no previously-included files matching '*.pyc' found under directory 'testsuite'
      warning: no previously-included files matching '*.pyo' found under directory 'testsuite'
      no previously-included directories found matching 'docs/_build'
  
      Installed /home/chris/computer/wtmp/build/utmp/pep8-1.5.7-py2.7.egg
      Searching for pyflakes&gt;=0.8.1,&lt;0.9
      Reading https://pypi.python.org/simple/pyflakes/
      Best match: pyflakes 0.8.1
      Downloading https://pypi.python.org/packages/source/p/pyflakes/pyflakes-0.8.1.tar.gz#md5=905fe91ad14b912807e8fdc2ac2e2c23
      Processing pyflakes-0.8.1.tar.gz
      Writing /tmp/easy_install-R5ltqy/pyflakes-0.8.1/setup.cfg
      Running pyflakes-0.8.1/setup.py -q bdist_egg --dist-dir     /tmp/easy_install-R5ltqy/pyflakes-0.8.1/egg-dist-tmp-a8CCFW
      zip_safe flag not set; analyzing archive contents...
      pyflakes.checker: module references __file__
      pyflakes.checker: module references __path__
      pyflakes.test.test_api: module references __file__
      pyflakes.test.test_undefined_names: module references __file__
      pyflakes.test.test_undefined_names: module references __path__
  
      Installed /home/chris/computer/wtmp/build/utmp/pyflakes-0.8.1-py2.7.egg
  
      warning: no files found matching '*.rst' under directory 'docs'
      warning: no files found matching '*.py' under directory 'docs'
  Installing collected packages: utmp
    Found existing installation: utmp 0.4
      Uninstalling utmp:
        Successfully uninstalled utmp
    Running setup.py install for utmp
  
      warning: no files found matching '*.rst' under directory 'docs'
      warning: no files found matching '*.py' under directory 'docs'
      Installing utmp script to /home/chris/computer/wtmp/bin
  Successfully installed utmp
  Cleaning up...
  </code></pre>