title: How to extract a certain paragraph from a file use regex in python?
body: <p>My question is to extract a certain paragraph (e.g., usually a middle paragraph) from a file through the regex in Python.</p>
  
  <p>An example file is as follows:</p>
  
  <pre><code>poem = """The time will come
  when, with elation,
  you will greet yourself arriving
  at your own door, in your own mirror,
  and each will smile at the other's welcome,
  and say, sit here. Eat.
  You will love again the stranger who was your self.
  Give wine. Give bread. Give back your heart
  to itself, to the stranger who has loved you
  
  all your life, whom you ignored
  for another, who knows you by heart.
  Take down the love letters from the bookshelf,
  
  the photographs, the desperate notes,
  peel your own image from the mirror.
  Sit. Feast on your life."""
  </code></pre>
  
  <p>How to extract the second paragraph (which means "all you life ... the bookshelf,") of this poem use regex in python?</p>