sughiy/darkart

A binary interface let Chez Scheme use Python, Lua, Ruby etc's library

Darkart: Chez Scheme's Forign Library Interface

A binary interface let Chez Scheme use Python, Lua, Ruby etc's library

This project is inspired by the Julia language. The FFI interface provided by Chez is used to embed the interpreter or JIT compiler of other languages into the Scheme program (CPython, Luajit etc) or to link the compiled object code with the C binary interface. (OCaml, Golang etc).

This library can be ported to other Scheme implementations, with r6rs-pffi.

Priority: Python ✅ > Julia > Javascript > OCaml > lua ✅

Ecosystem: NumPy ✅ SciPy 🚧 SymPy 🚧 Matplotlib ✅ Pandas 🚧

Manual

https://github.com/guenchi/Darkart/blob/master/manual/python.md

Exemple

(define np (py-import 'numpy))

(define ndarray (py-get np 'ndarray))
(define pi (py-get np 'pi))
(define np-array (py-get np 'array))
(define np-sin (py-get np 'sin))
(define np-tolist (py-get ndarray 'tolist))

(define get-sin
    (lambda (lst)
        (plist->list
            (py-call np-tolist
                (py-call np-sin
                    (py-div
                        (py-mul pi 
                            (py-call np-array
                                (list->plist lst)))
                        (int 180)))))))

(get-sin '(1 2 3 4 5 6 7 8))

=>
(0.01745240643728351 0.03489949670250097 0.05233595624294383 0.0697564737441253 
0.08715574274765817 0.10452846326765346 0.12186934340514748 0.13917310096006544)

The ecosystem which base on Darkart:

https://github.com/guenchi/NumPy

https://github.com/guenchi/SciPy

https://github.com/guenchi/SymPy

https://github.com/guenchi/Matplotlib

https://github.com/guenchi/Pandas

(which is more python library binding exemples)

Sources:

https://github.com/JuliaPy/PyCall.jl/blob/master/src/PyCall.jl

https://docs.python.org/3.7/c-api/index.html

https://docs.python.org/2.5/ext/callingPython.html

http://www.linux-nantes.org/~fmonnier/OCaml/ocaml-wrapping-c.html

http://caml.inria.fr/pub/docs/manual-ocaml-4.00/manual033.html#htoc281

Deprecated attempt:

† https://github.com/guenchi/Py-call