Go-Python-Interoperability

Running a Go Function from a Python Script

This README provides step-by-step instructions on how to run a Go function from a Python script. We'll create a minimal Go project with a function and a Python script to execute that function.

Prerequisites

Before proceeding, make sure you have the following installed on your system:

• Go programming language (Download Go)
• Python 3

Steps

1. Create a New Go File

1.1. Create a new Go file, for example, test.go, using a text editor or an integrated development environment (IDE).

1.2. Add the following Go code to test.go:

package main

import "fmt"

func GolangFunction1() {
    fmt.Println("Running Golang Function 1")
}

func main() {
    fmt.Println("Hello from main function")
    GolangFunction1()
}

2. Create a New Go File

Now, let's compile the Go file into an executable binary.

2.1. Open a terminal and navigate to the directory containing test.go.

cd /path/to/your/directory

2.2. Compile the Go code

Run the following command to compile the Go code into an executable binary named mytestapp:

go build -o mytestapp test.go

The -o flag specifies the output file name (mytestapp in this case), and test.go is the source file.

3. Create a Python Script

Now, we'll create a Python script that will call the Go function.

3.1. Create a New Python File

Create a new Python file, for example, test.py, using a text editor or an integrated development environment (IDE).

3.2. Add Python Code

Add the following Python code to test.py:

import subprocess

def run_go_function(function_name):
    try:
        # Execute the Go binary and capture its output
        result = subprocess.run(['./mytestapp', function_name], stderr=subprocess.STDOUT, text=True)

        # Print the output
        print(result)
    except subprocess.CalledProcessError as e:
        # Handle any errors that occur during execution
        print(f"Error: {e}")

if __name__ == "__main__":
    # Call your Go functions here
    run_go_function("GolangFunction1")

4. Run the Python Script

Now, let's run the Python script to call the Go function.

4.1. Open a Terminal

Open a terminal and navigate to the directory containing test.py and the mytestapp binary.

4.2. Run the Python Script

Run the Python script using the following command:

python3 test.py

The Python script will execute GolangFunction1 from the Go binary and print its output.

Troubleshooting

If you encounter permission issues, ensure that the Go binary (mytestapp) has execute permission. You can use the chmod command to set the execute permission:

chmod +x mytestapp

If you encounter issues with function execution, double-check the function name in both your Go code and Python script to ensure they match.

If you need to call a different Go function, modify the Python script to pass the appropriate function name as an argument to the Go binary.

That's it! You have successfully run a Go function from a Python script.