title: Python schedule a job at specific time
body: <p>Is there any way to have a script with python that schedule a a job on a given datetime? For instance schedule a tweet at <code>01-09-2017 09:30:00</code>.</p>
  
  <p>So far I have seen the <em>schedule</em> and <em>apscheduler</em> libraries but I haven't find that allows me to schedule at a given time only for once.</p>
  
  <p>Thanks!</p>