Could not install through pip

[nomad5000]

When I tried to install through pip I got this error message.
(stafffood)MacBook-Pro-de-Michael:stafffood michael$ tail /Users/michael/.pip/pip.log
Traceback (most recent call last):
File "/Users/michael/PythonEnvs/stafffood/lib/python2.7/site-packages/pip/basecommand.py", line 122, in main
status = self.run(options, args)
File "/Users/michael/PythonEnvs/stafffood/lib/python2.7/site-packages/pip/commands/install.py", line 278, in run
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
File "/Users/michael/PythonEnvs/stafffood/lib/python2.7/site-packages/pip/req.py", line 1177, in prepare_files
url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
File "/Users/michael/PythonEnvs/stafffood/lib/python2.7/site-packages/pip/index.py", line 277, in find_requirement
raise DistributionNotFound('No distributions at all found for %s' % req)
DistributionNotFound: No distributions at all found for pyPdf (from xhtml2pdf==0.0.5->django-pdfy)