Is there any plan for support Cython?
What kind of support would you expect?
Cython is a bit similar to SWIG in that it generates extension modules for Python,
and is good at integrating with C libraries.
(it's also a kind of Python compiler, which bypasses the interpreter eval loop, but
this is probably not relevant here)
The main difference is the language used to describe this extension: SWIG
is essentially an extension of the C language whereas Cython is an extension of
the Python syntax.
I don't see the use of SWIG generating Cython code, for example.