title: converting list of string to list of integer
body: <p>How do I convert a space separated integer input into a list of integers?</p>
  
  <p>Example input:</p>
  
  <pre><code>list1 = list(input("Enter the unfriendly numbers: "))
  </code></pre>
  
  <p>Example conversion:</p>
  
  <pre><code>['1', '2', '3', '4', '5']  to  [1, 2, 3, 4, 5]
  </code></pre>