old_contents: from flask import render_template
  
  from . import aflafrettir
  
  @aflafrettir.route('/')
  def index():
    return render_template('aflafrettir/index.html')
  
  @talks.route('/user/<username>')
  def user(username):
   return render_template('aflafrettir/index.html', username = username)
  
new_contents: from flask import render_template
  
  from . import aflafrettir
  
  @aflafrettir.route('/')
  def index():
    return render_template('aflafrettir/index.html')
  
  @aflafrettir.route('/user/<username>')
  def user(username):
   return render_template('aflafrettir/user.html', username = username)
  
subject: Use the correct template, and call the aflafrettir route decorator