title: What's the meaning of `f` and `m` in PyCharm auto-completion?
body: <p>In the PyCharm, the auto-completion there are <code>f</code> and <code>m</code>. </p>
  
  <p>What's the meaning of <code>f</code> and <code>m</code>?</p>
  
  <p><kbd><a href="https://i.stack.imgur.com/4TEZk.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/4TEZk.jpg" alt="enter image description here"></a></kbd></p>
  
  <p>Does the <code>f</code> means function?</p>