title: Check if a digit is present in a list of numbers
body: <p>How can I see if an index contains certain numbers?</p>
  
  <pre><code>numbers = [2349523234, 12345123, 12346671, 13246457, 134123431]
  
  for number in numbers:
      if (4 in number):
          print(number + "True")
      else:
          print("False")
  </code></pre>