title: Pyhon Check if all the items in list can be numeric
body: <p>Lets say i have this in python:</p>
  <pre><code>List1 = [&quot;643&quot;, &quot;53&quot;, &quot;531&quot;]
  </code></pre>
  <p>and I want to check if all the items in my list can be digits (isDigit), how do I do it without using a for loop, and most preferably with the all() function.</p>