This is a standard Python Distutil distribution. To install simply run:
for python2.7
python setup.py install
for python3.3+
python3 setup.py install
This installs dbdreader system-wide. You need root privileges to do this. If you don't have root privileges, or you don't wish to install dbdreader system-wide you can install into a custum directory by adding the option "--prefix=...".
For the extension module to compile you will also need to have gcc and python(3) development headers installed.