title: Regex Find All Numbers Between 6 or 7 Digits
body: <p>I am using this regex using the re module in python and getting this result:</p>
  
  <pre><code>In [156]: re.findall(r'.*\D(\d{6,7})\D.*', ' f123456 f1234567 ')
  Out[156]: ['1234567']
  </code></pre>
  
  <p>...but I'm wanting this result:</p>
  
  <pre><code>Out[156]: ['123456', '1234567']
  </code></pre>
  
  <p>I can't figure out how to form this regex. Can you please help?</p>