def even_number_of_evens(numbers):
    for x in numbers:
        if (x % 2) == 0:
            return False
        elif x == None:
            return False

assert even_number_of_evens([]) == False, "No numbers"
assert even_number_of_evens([2]) == False, "One even number"
#assert even_number_of_evens([2, 4]) == True, "Two even numbers"
#assert even_number_of_evens([2, 3]) == False, "Two numbers, only one even"
#assert even_number_of_evens([2, 3, 9, 10, 13, 7, 8]) == False, "Multiple numbers, three are even"
#assert even_number_of_evens([2, 3, 9, 10, 13, 7, 8, 5, 12]) == True, "Multiple numbers, four are even"
#assert even_number_of_evens([1, 3, 9]) == False, "No even numbers"

print("All Test OK")