exec format error when trying to excute a python excutable in golang

Question

Im trying to write a cli that execute a python file from https://github.com/timeopochin/GanTTY. When excute in terminal using

python3 ./GanTTY/main.py gantt test

it will create a new interactive gantt chart. However when i do this in my go code, like this

{
  Name: "project",
  Usage: "add a new project with gantt chart",
  Action: func(c *cli.Context) error {
      cmd := exec.Command("./GanTTY/main.py", "gantt", "test")
      err:= cmd.Run()
      if err != nil {
          log.Fatal(err)
      }
      fmt.Println("opend project")
      return nil
  },
},

and run the go program

go run program.go add project //"add" and "project" are command and sub command

it gives me this error

2022/04/03 11:42:19 fork/exec ./GanTTY/main.py: exec format error
exit status 1

Answer 1

You need to add python3 or cmd.exe /c python3 in windows.

cmd := exec.Command("python3","GanTTY/main.py", "gantt", "test")

use cmd.Dir to set directory of python file relative to current wd

cmd := exec.Command("python3","main.py", "gantt", "test")
cmd.Dir = "GanTTY"