new_contents: f = [1, 2]
  
  def fib(n):
      i = 0
      while f[i] + f[i+1] <= n:
          f.append(f[i] + f[i+1])
          i += 1    
      return f
  
  fib(input("not exceed n: "))
  
  even = [x for x in f if x%2 == 0]
  sum(even)
  
subject: Create p2op.py