title: Determining the count and percentage of numbers in a string (pandas)
body: <p>I have a column in a dataset df which contains strings like these</p>
  <pre><code>Webs
  https://www.mhouse.com/107462464135489/posts/please-lets-be-guidedun-is-where-the-code/142970213918047/
  https://www.msed.com/IKONINIBWANASEEDMARCH2020.html
  https://www.msed.com/
  https://carrice.com/jen/stat/1241025420562178050?lang=en
  </code></pre>
  <p>...</p>
  <p>I would like to determine the count and the percentage of numbers within them; so, for instance</p>
  <pre><code>Count      Percentage
  15         (and the percentage compared to the length of the string)
  4          ...
  0          ...
  19         ...
  </code></pre>
  <p>If I am not wrong I'd use a combination of is digit for determining the number of digits in the strings and len() for determining the length of the string, then the percentage.</p>