If you have :file:`easy_install` installed, you can simply do:
$ easy_install pycassa
This will also install the Thrift python bindings automatically.
Make sure that you have Thrift's python bindings installed:
$ easy_install thrift05
You can download a release from github or check out the latest source from github:
$ git clone git://github.com/pycassa/pycassa.git
You can simply copy the pycassa directory into your project, or you can install pycassa system-wide:
$ cd pycassa/
$ sudo python setup.py install