title: Recursive os.listdir?
body: <p>I'd like to get a list of all files in a directory recursively, with no directories.</p>
  
  <p>Say there's a directory <code>~/files</code> with "a.txt", "b.txt", and a directory "c" with "d.txt" and "e" inside it, and "f.txt" inside e. How would I go about getting a list that looks like <code>['/home/user/files/a.txt', '/home/user/files/b.txt', '/home/user/files/c/d.txt', '/home/user/files/c/e/f.txt']</code>?</p>