input: Write a python function to match a route and get the name of the page.
  assert match_route('/') == 'homepage'
  assert match_route('/about') == 'aboutpage'
  assert match_route('/contact') == 'contactpage'
  assert match_route('/nonexistent') == None
output: def match_route(route):
      routes = {
          '/': 'homepage',
          '/about': 'aboutpage',
          '/contact': 'contactpage'
      }
      return routes.get(route)