title: Trying to create an odd even function
body: <p>i am trying to create a function where when i call the function it prompts the user to enter an integer and returns whether it is even or odd.
  i am trying to make it so that my code prints an error to the console when nothing is entered or when a string is entered, i have gotten it to the point whereby if i enter a number it returns   number, "is an even number" if it is even and    number, "is not an even number" if it is not even here is my code below i am using python 2.7.3 </p>
  
  <pre><code>def is_even():
      x = int(raw_input("Enter number"))
      if x % 2 == 0:
          return x, "is an even number"
      else:
          return x, "is not an even number"
  
  print is_even()
  </code></pre>