problem2 in python

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:

1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...

Find the sum of all the even-valued terms in the sequence which do not exceed four million.

自分の解答

def fib(n):
    list = range(3)
    if n ==1 or n == 2 or n == 3:
        return n
    for i in range(n):
        if not(i == 0 or n == 1 or i == 1):
            if(list[i]+list[i-1]) >4000000:
                break
            list.append(list[i]+list[i-1])
    list.remove(0)
    return list
sum = 0
ans = fib(400000)
for j in ans:
    if j %2 == 0:
        print j
        sum +=j
print sum