pip error

Local-Admins-MacBook-Pro:Downloads ericgallager$ pip search "trac"
Traceback (most recent call last):
  File "/usr/local/bin/pip", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pkg_resources.py", line 2870, in <module>
    add_activation_listener(lambda dist: dist.activate())
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pkg_resources.py", line 710, in subscribe
    callback(dist)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pkg_resources.py", line 2870, in <lambda>
    add_activation_listener(lambda dist: dist.activate())
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pkg_resources.py", line 2305, in activate
    map(declare_namespace, self._get_metadata('namespace_packages.txt'))
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pkg_resources.py", line 1881, in declare_namespace
    path = sys.modules[parent].__path__
KeyError: 'bda'