title: How did I get informations on the module I'm writing?
body: <p>I'm writing my first complete python project with Vim. As I was modifying a
  file I accidentally hit several keys that I can't find back and I get this
  prompt:</p>
  
  <p><a href="https://i.stack.imgur.com/BCiSi.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BCiSi.png" alt="Help on my module"></a></p>
  
  <p>I didn't know it was possible to get this kind of help on a module I am
  writing and I have no idea how I got it, so my question is:</p>
  
  <p>What command or tools allows to generate this kind on module information?</p>
  
  <p><strong>Several notes</strong></p>
  
  <ul>
  <li><p>The command is not a Vim command because the ouput was in an external
  shell (so I probably use an equivalent to <code>:![command]</code>.</p></li>
  <li><p>I don't have any Vim plugin related to python installed so it was probably not generated by a plugin.</p></li>
  <li><p>The command wasn't issued in an interactive python prompt since I started my vim from my bash prompt.</p></li>
  <li><p>I have not idea of how many keystrokes I used.</p></li>
  <li><p>My Vim command history and my bash history doesn't have a trace of what
  happened.</p></li>
  <li><p>I'm using zsh and oh-my-zshell</p></li>
  </ul>
  
  <p>I know that this question might sound silly but I have no idea of which tool can do that and I have no mean to find what sequence of keystrokes I used.</p>