in the way of understanding return in python? what is the difference Here?

please explain in details as much as You can

why that is True?

def array_front9(nums):
    for i in nums[:4]:
        if i == 9:
            return True
    return False

array_front9([1, 2, 9, 3, 4])

while this is False:

def array_front9(nums):
    for i in nums[:4]:
        if i == 9:
            return True
        else:
            return False

array_front9([1, 2, 9, 3, 4])