index.html

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0"/>
    <link href="https://fonts.googleapis.com/css?family=Montserrat:500,700" rel="stylesheet">
    <link href="index.js" rel="script">
    <link href="layout.css" rel="stylesheet">
    <title>Login_popup</title>
</head>
<body>
<section class="popup-graybox">
    <div class="login-popup-sec">
        <div class="login-content">
            <h2 data-edit="text">FullxTest</h2>
            <ul>
                <li>
                    <label>
                        <input type="text"
                               placeholder="Enter IP"
                               id="ip">
                    </label>
                </li>
                <li>
                    <button id="submitButton" class="login-btn"
                            onclick="getIP()">Enter
                    </button>
                </li>
                <script>
                    let address;

                    function getIP() {
                        //getting user input
                        address = document.getElementById("ip").value;
                        //  alert(address);

                    }
                </script>
                <script>
                    var myScript = 'fullxtest.py'; // scripn variable
                    var Pythonshell = require('python-shell');
                    var pyshell = new Pythonshell(myScript, mode);
                    var options = {
                        mode: 'text',
                        pythonPath: '<-path to python'
                    }

                    pyshell.on('message', function (message) {
                        console.log(message);

                    });
                    pyshell.end(function (error) {
                        if(error){
                            throw error;
                        }
                    console.log('test')

                    });
                    let shell = new PythonShell('fullxtest.py', options);
                    PythonShell.defaultOptions = {scriptPath, '../s'}
                </script>
            </ul>
        </div>
    </div>
</section>
</body>
</html>