title: Regular expression to find even/odd number
body: <p>I used codes below to find out even numbers from a string and returned nothing.</p>
  <p>could anyone tell me what I missed? Thank you very much.</p>
  <pre><code>import re
  
  str2 = &quot;adbv345hj43hvb42&quot;
  
  even_number = re.findall('/^[0-9]*[02468]$/', str2 )
  </code></pre>