How to use the arrow.arrow.Arrow.fromdatetime function in arrow

def setUp(self):
        super(ArrowSpanTests, self).setUp()

        self.datetime = datetime(2013, 2, 15, 3, 41, 22, 8923)
        self.arrow = arrow.Arrow.fromdatetime(self.datetime)

def test_exclusive_inclusive_bounds(self):
        target = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
        start = arrow.Arrow.fromdatetime(datetime(2013, 5, 5))
        end = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
        result = target.is_between(start, end, "(]")
        self.assertTrue(result)

def test_inclusive_inclusive_bounds_same_date(self):
        target = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
        start = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
        end = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
        result = target.is_between(start, end, "[]")
        self.assertTrue(result)

def test_type_error_exception(self):
        with self.assertRaises(TypeError):
            target = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
            start = datetime(2013, 5, 5)
            end = arrow.Arrow.fromdatetime(datetime(2013, 5, 8))
            target.is_between(start, end)

        with self.assertRaises(TypeError):
            target = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
            start = arrow.Arrow.fromdatetime(datetime(2013, 5, 5))
            end = datetime(2013, 5, 8)
            target.is_between(start, end)

        with self.assertRaises(TypeError):
            target.is_between(None, None)

def test_exclusive_exclusive_bounds_same_date(self):
        target = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
        start = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
        end = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
        result = target.is_between(start, end, "()")
        self.assertFalse(result)

def test_to(self):

        dt_from = datetime.now()
        arrow_from = arrow.Arrow.fromdatetime(dt_from, tz.gettz("US/Pacific"))

        self.expected = dt_from.replace(tzinfo=tz.gettz("US/Pacific")).astimezone(
            tz.tzutc()
        )

        self.assertEqual(arrow_from.to("UTC").datetime, self.expected)
        self.assertEqual(arrow_from.to(tz.tzutc()).datetime, self.expected)

def test_exclusive_inclusive_bounds(self):
        target = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
        start = arrow.Arrow.fromdatetime(datetime(2013, 5, 5))
        end = arrow.Arrow.fromdatetime(datetime(2013, 5, 7))
        result = target.is_between(start, end, "(]")
        self.assertTrue(result)

if end is None:

            if limit is None:
                raise ValueError("one of 'end' or 'limit' is required")

            return cls.max, limit

        else:
            if limit is None:
                return end, sys.maxsize
            return end, limit


Arrow.min = Arrow.fromdatetime(datetime.min)
Arrow.max = Arrow.fromdatetime(datetime.max)

def _get_iteration_params(cls, end, limit):

        if end is None:

            if limit is None:
                raise ValueError("one of 'end' or 'limit' is required")

            return cls.max, limit

        else:
            if limit is None:
                return end, sys.maxsize
            return end, limit


Arrow.min = Arrow.fromdatetime(datetime.min)
Arrow.max = Arrow.fromdatetime(datetime.max)