new_contents: def fibonacci(n):
      if n == 0: return 0
      if n == 1: return 1
      return fibonacci(n - 1) + fibonacci(n - 2)
  
  def fibonacci_it(n):
      if n == 0: return 0
      if n == 1: return 1
      a = 0
      b = 1
      result = 0
      for i in xrange(1, n):
          result = a + b
          a = b
          b = result
      return result
  
  count = 10
  
  print "Recursive Fibonacci:"
  for i in xrange(0, count):
      print "f({}) = {}".format(i, fibonacci(i))
  
  print "Iterative Fibonacci:"
  for i in xrange(0, count):
      print "f({}) = {}".format(i, fibonacci_it(i))
  
subject: Add fibonacci methods.