title: match everything except three consecutive double quotes
body: <p>I'm looking for a regex to parse <em>everything but three consecutive double quotes</em>. The problem is that when I use a normal negative lookahead the consecutive double quotes get gobbled and there it doesn't really match what I want.</p>
  
  <p>Let's assume I have the following text:</p>
  
  <pre><code>Lorem Ipsum
  """
  sdsdfgsdf
  """
  bar
  </code></pre>
  
  <p>And want to <em>linewise-regex</em> to match the first, third and fifth row, but not the <code>"""</code>.</p>
  
  <p>I've tried the following regex: <code>/(?!""").*/</code>, but that's when the double quotes get gobbled.
  Trying to match one double quote at a time using <code>["]</code> fails too: <code>/(?!["]["]["]).*/</code></p>
  
  <p>I'm using Python to match the regex.</p>
  
  <p>Any ideas how I can make this regex work?</p>