3>Important Points about Appending:</h3>
      <ul>
        <li>If the file doesn’t exist, <code>'a'</code> mode will create the file and then add the new content.</li>
        <li>Unlike <code>'w'</code> mode, <code>'a'</code> doesn’t delete anything from the file; it simply adds new
          data at the end.</li>
      </ul>

      <h3>Summary:</h3>
      <p>
        - Use <code>'w'</code> mode to overwrite a file and write new content. Be careful, as it will erase any previous
        data in the fi