a, b = 0, 1
    while a < max_nr:
        yield a
        a, b = b, a + b

print(list(fibonacci(300)))


def golden_ratio(max_nr: int):
    a, b = 0, 1
    while a < max_nr:
        if a > 0:
            fi = round(b/a, 5)
            yield fi
        a, b = b, a + b

print(list(golden_ratio(300)))