title: split space separated numeric string into a list in Python3
body: <p>Split space separated <strong>Numerical String</strong> into a <strong>List</strong> containing <strong>Numbers</strong>.</p>
  <p>I want this:-</p>
  <p><code>A = '5 2 12 4 29'</code></p>
  <p>to be this in <strong>single line of code</strong></p>
  <p><code>B = [5,2,12,4,29]</code></p>