title: New to Coding: Iterating over a list in Python
body: <p>So I am completely new to coding and I'm going through a class right now and I'm stuck. Essentially the problem is this:</p>
  <p>Assign <code>sum_extra</code> with the total extra credit received given list <code>test_grades</code>. Full credit is 100, so anything over 100 is extra credit.</p>
  <p>Sample output for the given program with input: '101 83 107 90'</p>
  <p>My current code is this:</p>
  <pre><code>user_input = input()
  test_grades = list(map(int, user_input.split())) # test_grades is an integer list of test scores
  
  
  sum_extra = 0 
  
  for grade in test_grades: 
      if grade &gt; 100:
          sum_extra = grade - 100
          
  print('Sum extra:', sum_extra)
  </code></pre>
  <p>The problem I am having is that it isn't adding the total extra over 100. Like for the example inputs above it runs and totals 7 instead of 8. I'm honestly not sure what I am missing. Also if it isn't too much trouble, I would prefer to just get a nudge in the right direction rather than a flat out answer. Thank you so much.</p>