Naive 'go' bindings towards the C-API of CPython

this package provides a go package named "python" under which most of the PyXYZ functions and macros of the public C-API of CPython have been exposed.

theoretically, you should be able to just look at:

http://docs.python.org/c-api/index.html

and know what to type in your go program.

this package also provides an executable "go-python" which just loads "python" and then call python.Py_Main(os.Args). the rational being that under such an executable, go based extensions for C-Python would be easier to implement (as this usually means calling into go from C through some rather convoluted functions hops)

With Go 1 and the go tool, cgo packages can't pass anymore additional CGO_CFLAGS from external programs (except pkg-config) to the "fake" #cgo preprocessor directive. So one has to do instead:

$ mkdir -p $GOPATH/pkg/github.com/sbinet
$ cd $GOPATH/pkg/github.com/sbinet
$ git clone http://github.com/sbinet/go-python
$ cd go-python && make

Is available on gopkgdoc:

http://go.pkgdoc.org/github.com/sbinet/go-python/pkg/python

$ cat main.go
package main

import "fmt"
import "github.com/sbinet/go-python/pkg/python"

func main() {
        gostr := "foo"
        pystr := python.PyString_FromString(gostr)
        str := python.PyString_AsString(pystr)
        fmt.Println("hello [", str, "]")
}

$ gorun ./main.go
hello [ foo ]

• fix handling of integers (I did a poor job at making sure everything was ok)
• add CPython unit-tests
• do not expose C.FILE pointer and replace it with os.File in "go-python" API
• provide an easy way to extend go-python with go based extensions
• think about the need (or not) to translate CPython exceptions into go panic/recover mechanism
• use SWIG to automatically wrap the whole CPython api ?