title: What is the "m" behind python version like python3.6m
body: <p>Recently when I install python3.6 in Ubuntu 16.04 I see it installs both python3.6 and python3.6m</p>
  
  <p>What the hell is <strong>python3.6m</strong>?
  Should I use <strong>python3.6</strong> or <strong>python3.6m</strong> to run my python script?</p>
  
  <p>Thanks</p>