title: How to match numbers with unclosed parens against closed parens using rexex (Python)
body: <p>I struggle to find a good regex match for that kind of sentence:</p>
  
  <blockquote>
    <p>1) Remove the modern cement (20) render to the front of all three
    properties 2) Inspect the sole plate and studs at front of all three
    properties, repair where possible, and replace where rotten 3) Apply
    sawn lath and lime render 4) Finish with limewash including pigment to
    as closely match existing colour as possible (30)</p>
  </blockquote>
  
  <p>The thing is to match <code>1)</code>, <code>2)</code>, <code>3)</code>, <code>4)</code> but NOT <code>(20)</code> nor <code>(30)</code>.</p>
  
  <p>My try:
  <code>((?!\([0-9]+\))\s*\d+\s*\))</code>
  fails.</p>
  
  <p>Any suggestions?</p>