def test_is_empty_array():
    a = ['', '', '', '']
    assert (is_empty_array(a) is True)
    b = [1, '', '', '']
    assert (is_empty_array(b) is False)
def test_is_empty_array():
    a = [, , , ]
    assert (is_empty_array(a) is True)
    b = [1, , , ]
    assert (is_empty_array(b) is False)