Radon

import io

class Network {
    fun __constructor__(username, password) {
        this.username = username
        this.password = password
    }

    fun login() {
        if this.username == "radon" {
            if this.password == "password" {
                print("Log in successful")
            } else {
                print("Invalid credentials")
            }
        } else {
            print("Invalid credentials")
        }
    }
}

var username = input("Enter you username: ")
var password = io.Input.get_password("Enter your password: ")

var network = Network(username, password)
network.login()