$ sudo python setup.py install
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'install_requires'
  warnings.warn(msg)
running install
running build
running build_py
running install_lib
running install_egg_info
Removing /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/webtest-0.1-py2.7.egg-info
Writing /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/webtest-0.1-py2.7.egg-info