# goal: 0 1 2 3 4 5 6 7 8 9

def generator_test():
    for i in range(10):
        def func():
            return i
        yield func()

for test in generator_test():
    print(test())

# result: 0 1 2 3 4 5 6 7 8 9

for test in list(generator_test()):
    print(test())

# result: 9 9 9 9 9 9 9 9 9 9