func_code: def fibonacci(n):
      fib = [0, 1, 1, 2, 3, 5, 8, 13, 21, 34]
      i = 10
      while i < 20:
          new = int(fib[i - 1]) + int(fib[i - 2])
          fib.append(new)
          i += 1
      j = 1
      while j < len(fib):
          if j == n:
              return fib[j]
          j += 1