title: how to pass argument to datetime.timedelta
body: <p>We already know that, datetime.timedelta(hours= 5) is a proper syntax.
  How is it possible to pass an argument that can replace 'hours' as given in the function down below?</p>
  
  <pre><code>    def check_time(until_when, def_time, how_long):
              if until_when- datetime.datetime.now() &gt; datetime.timedelta(def_time = how_long):
              input('Task has been finished.\nPress any key to quit\n')
              exit()  
  </code></pre>