Now they can get those features without having to switch to a new Python implementation. Coconut, a newly developed open source dialect of Python, provides new syntax for using features found in ...

The new “pure Python” syntax for Cython uses Python’s ... Cython is forgiving enough to let you declare external function signatures that approximate the original headers.

By PEP-3113 this style of function definitions was removed, but as python 2.7 is still a popular version being in active use, ST should still support that kind of function declaration.