title: Playing with loops in python and not working
body: <p>I am getting an error message from a simple looping exercise. </p>
  
  <pre><code>for i in range( 1, 4 ) :
      for j in range( 1, 4 ) :
          print( 'Running i=' + i + 'J=' + j)
  </code></pre>
  
  <blockquote>
    <p>Error message:
       print( 'Running i=' + i + 'J=' + j)
    TypeError: can only concatenate str (not "int") to str</p>
  </blockquote>