You need to install setuptools
:
https://pypi.python.org/pypi/setuptools#installing-and-using-setuptools
Basically,
for Linux:
wget https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py -O - | python
for Windows 7:
download and execute this file.
for Windows 8, execute in PowerShell (as Admin):
(Invoke-WebRequest https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py).Content | python -