def oddCount(L: list[int]) -> int:
    return len([n for n in L if n % 2])

def testOddCount():
    print('Testing oddCount()...', end='')
    assert(oddCount([]) == 0)
    assert(oddCount([1]) == 1)
    assert(oddCount([2]) == 0)
    assert(oddCount([1,2,3,4,5,4,3]) == 4)
    assert(oddCount([1,2,3,4,5,4,3,2]) == 4)
    assert(oddCount([2,4,6,8,10,12,14]) == 0)
    assert(oddCount([1,1,1,1,1]) == 5)
    print('Passed!')

def main():
    testOddCount()

main()