title: TypeError: can only concatenate tuple (not "str") to tuple Error
body: <p>Just trying to make a tuple to add to make my main programming. Anyway this is my code-</p>
  
  <pre><code>print"I have a few things to finish my exam, but i might need more"
  exam=("Brain","Computer","python")
  print "The stuff i have are:"
  for stuff in exam:
      print stuff
  print"I still need my previous assignments!"
  extra=("Assignments")
  exam += extra
  for stuff in exam:
      print stuff
  </code></pre>
  
  <hr>
  
  <p>I keep getting the can only concatenate tuple error. Anyone have a clue my issue/how to fix it? Greatly appreciated.</p>