def test_fib_generator():
"""Tests fib generator output """
for index, number in fibonacci_generator():
#: since the generator is infinite, we'd like to terminate at some
#: point
if index >= len(FIBONACCI_NUMBERS):
break
assert number == FIBONACCI_NUMBERS[index]
def problem_2():
""" Attempt to solve the problem... """
total = 0
for value in fibonacci_generator():
if value[1] >= 4000000:
break
if value[1] % 2 == 0:
total += value[1]
return total