Last October I worked on a libyahoo2 binding using Pyrex and got it far enough along to discover the version of libyahoo2 I was using couldn't log into YIM. Several Ubuntu updates later I noticed libyahoo2 had been upgraded and, sure enough, this version worked.

I updated the Git repository mentioned in that post but it is likely if I continue to work on it it will go to python-yahoo2 on GitHub.

Pyrex's blindness where "const" is concerned is pretty annoying.