Python script inside Golang

pygo.go

package main

/*
#cgo CFLAGS: -I/usr/include/python3.8
#cgo LDFLAGS: -lpython3.8
#include <Python.h>
*/
import "C"

import (
    "fmt"
    "unsafe"
)

func main() {
    // Initialize the Python interpreter
    C.Py_Initialize()

    // Create a Python module object for the script you want to run
    module := C.PyImport_ImportModule("example")

    if module == nil {
        // Handle error when the module could not be imported
        fmt.Println("Failed to import module")
        return
    }

    // Call the Python function from the module
    function := C.PyObject_GetAttrString(module, "my_func")
    result := C.PyObject_CallObject(function, nil)

    if result == nil {
        // Handle error when the function call failed
        fmt.Println("Failed to call function")
        return
    }

    // Convert the result to a string and print it
    cStr := C.PyUnicode_AsUTF8(result)
    goStr := C.GoString(cStr)
    fmt.Println(goStr)

    // Release Python objects and finalize the interpreter
    C.Py_DecRef(result)
    C.Py_DecRef(function)
    C.Py_DecRef(module)
    C.Py_Finalize()
}

In order to run a Python script inside Golang without using the Python interpreter, you can use the Cgo package to call the Python C API from your Golang code.

In this example, we first initialize the Python interpreter using C.Py_Initialize(). Then, we import the Python module that contains the script we want to run using C.PyImport_ImportModule(). Next, we call the Python function from the module using C.PyObject_GetAttrString() and C.PyObject_CallObject(). Finally, we convert the result to a Golang string and print it, and then we release all Python objects and finalize the interpreter using C.Py_DecRef() and C.Py_Finalize().

Note that you will need to modify the #cgo directives in the comments at the top of the file to match the path of your Python installation. Additionally, you will need to replace "example" with the name of your Python module, and "my_func" with the name of the function you want to call.