import base64

# Encode
encoded = base64.b64encode(b"Hello, Python!")
print(encoded)  # Output: b'SGVsbG8sIFB5dGhvbiE='

# Decode
decoded = base64.b64decode(encoded)
print(decoded)  # Output: b'Hello, Python!'

// Encode
let data = "Hello, JavaScript!";
let encoded = btoa(data);
console.log(encoded); // Output: "SGVsbG8sIEphdmFTY3JpcHQh"

// Decode
let decoded = atob(encoded);
console.log(decoded); // Output: "Hello, JavaScript!"

import java.util.Base64;

public class Main {
    public static void main(String[] args) {
        // Encode
        String original = "Hello, Java!";
        String encoded = Base64.getEncoder().encodeToString(original.getBytes());
        System.out.println(encoded); // Output: "SGVsbG8sIEphdmEh"

        // Decode
        byte[] decodedBytes = Base64.getDecoder().decode(encoded);
        String decoded = new String(decodedBytes);
        System.out.println(decoded); // Output: "Hello, Java!"
    }
}

using System;

class Program {
    static void Main() {
        // Encode
        string data = "Hello, C#!";
        string encoded = Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(data));
        Console.WriteLine(encoded); // Output: "SGVsbG8sIEMjIQ=="

        // Decode
        string decoded = System.Text.Encoding.UTF8.GetString(Convert.FromBase64String(encoded));
        Console.WriteLine(decoded); // Output: "Hello, C#!"
    }
}

<?php
// Encode
$data = "Hello, PHP!";
$encoded = base64_encode($data);
echo $encoded; // Output: "SGVsbG8sIFBIUCE="

// Decode
$decoded = base64_decode($encoded);
echo $decoded; // Output: "Hello, PHP!"
?>

require 'base64'

# Encode
data = "Hello, Ruby!"
encoded = Base64.encode64(data)
puts encoded # Output: "SGVsbG8sIFJ1Ynkh\n"

# Decode
decoded = Base64.decode64(encoded)
puts decoded # Output: "Hello, Ruby!"

package main

import (
    "encoding/base64"
    "fmt"
)

func main() {
    // Encode
    data := "Hello, Go!"
    encoded := base64.StdEncoding.EncodeToString([]byte(data))
    fmt.Println(encoded) // Output: "SGVsbG8sIEdvIQ=="

    // Decode
    decoded, _ := base64.StdEncoding.DecodeString(encoded)
    fmt.Println(string(decoded)) // Output: "Hello, Go!"
}