Another possibility is this: https://docs.python.org/3/howto/cporting.html https://docs.python.org/3/howto/cporting.html If either their library (or a dependen

Another possibility is this: https://docs.python.org/3/howto/cporting.html https://docs.python.org/3/howto/cporting.html If either their library (or a dependency) depends on something which binds to C, it could take some effort to make it python 3 compatible. (FWIW, I use 2 or 3 depending on the OS or libraries that I am dealing with)