title: How to match a line not containing a word
body: <p>I was wondering how to match a line not containing a specific word using Python-style Regex (Just use Regex, not involve Python functions)?</p>
  
  <p>Example:</p>
  
  <pre><code>PART ONE OVERVIEW 1 
  Chapter 1 Introduction 3
  </code></pre>
  
  <p>I want to match lines that do not contain the word "PART"？</p>