Marcus.Willock--Wrapping.Go.in.Python.md

Wrapping Go in Python

by, Marcus Willock

presentation

building shared objects in Go

package main

import "C" /* need it for C Python */
import "fmt"

/*
Below line is important for Go compiler to understand what need to be exported,
also there shouldn't be any whitespace between comment-symbol and `export` word
*/

//export goGoGo
func goGoGo(){
  fmt.Println("Go Go Go, Lock and Load.")
}

func main(){
  goGoGo()
}

#!/usr/bin/env bash

go build -o go_go_go.so -buildmode=c-shared go_go_go.go

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calling shared object files from python

import ctypes
import os

def main():
  # Path to shared object file
  path = os.path.join(os.path.abspath("."), "go_go_go.so")

  # load shared object file
  lib = ctypes.CDLL(path)

  # call shared object method
  lib.goGoGo()


if __name__ == "__main__":
  main()

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testing what is possible

• passing

• Int
• String
• Float
• Bool
• List
• Dict

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ending remarks

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