It's been more than 2 years since it was updated. It is outdated to the point that its hosting point (fedorahosted.org) has closed shop, although some forks can still be found on github. Multiple workarounds are needed for modern features (e.g. HTTPS, encryption). Its main fork (jurko) is unmaintained for several years; a newer fork on github (suds-community) ports to Python3, but there are too few commits to fix all the bugs.
While it is known that SUDS can have slow performance with large WSDLs, as it must download and parse the entire WSDL on startup, it has the handy feature of caching the WSDL. If you know that the file will not be updated regularly you can cache it for a specified time, otherwise it will default to cache for 1 day. By doing this you save the client from having to download and parse the entire WSDL each time it connects.
Development on the original project SUDS has stalled and it looks like it will not continue. The forked version gives Python 3.x support, but support and installation may be cumbersome for individuals to undertake.
The WSGI (web server gateway interface) compliance allows the server dispatcher to be integrated to other python frameworks such as Django. This allows the SOAP libraries to be more useful with current technologies.
With both python 2.x and 3.x support built into the same codebase, it is simple to use in multiple projects over an extended period of time. The base currently supports all versions of python.
The projects' last update was in 2013, and with a small community and no API, beginners may feel lost. There is good documentation within the code, but that is usually not enough.