The latest version of python-ssdeep can be installed very easily on Arch Linux by using AUR. The package for Python 2.x is named python2-ssdeep and the package for Python 3.x is named python-ssdeep.
The PKGBUILD files are available in the python-ssdeep git repository. Feel free to open a pull request if you want to improve it.
For more information have a look at the python-ssdeep project page.
We have released version 3.0 of our ssdeep Python binding. It has been completely rewritten to use cffi instead of cpython. The license has also been changed from GPLv2 to LGPLv3+.
More information are available on the python-ssdeep project page