title: Python threads do something at the EXACT same time
body: <p>Is it possible to have 2, 3 or more threads in Python to be able to execute something simultaneously - at the exact same moment? Is it possible if one of the threads is late, for the other to be waiting for it, so the last request can be executed at the same time?</p>
  
  <p>Example: There are two threads that are calculating specific parameters, after they have done that they need to click one button at the same time (to send post request to the server). </p>