new_contents: # http://codingbat.com/prob/p100347
  
  def no_teen_sum(a, b, c):
    return fix_teen(a) + fix_teen(b) + fix_teen(c)
  
  def fix_teen(n):
    if n in range(13, 20):
      if n == 15:
        return 15
      elif n == 16:
        return 16
      else:
        return 0
    else:
      return n
  
subject: Create no_teen_sum.py