title: How to find which pip package owns a file?
body: <p>I have a file that I suspect was installed by <code>pip</code>. 
  How can I find which package installed that file?</p>
  
  <p>In other words, I'm looking for a command similar to <code>pacman -Qo filename</code> or <code>dpkg -S filename</code>, but for <code>pip</code>. Does it exist? Or should I use some combination of <code>pip</code> and <code>grep</code>?
  In that case, I don't know how to list all the file installed.</p>