Generally, it’s preferable to bind to libraries rather than executables when given the option. In my case, I needed SVN access from Python and couldn’t, at that time, find a confidence-inspiring library to work with. So, I wrote svn.
It turns out that there is a Subversion-sponsored Python project. It looks to be SWIG-based.
This comes from the python-svn Apt package under Ubuntu.
The Programmer’s Guide has the following examples, among others:
import pysvn client = pysvn.Client() file_content = client.cat('file.txt')
import pysvn client = pysvn.Client() entry_list = client.ls('.')
import pysvn client = pysvn.Client() entry = client.info('.')