Add support for rsfhit and lshift operators

sqlalchemy_utils/types/range.py

@@ -162,6 +162,14 @@ class RangeComparator(types.TypeEngine.Comparator):
             other = map(self.coerce_arg, other)
         return super(RangeComparator, self).notin_(other)
 
+    def __rshift__(self, other, **kwargs):
+        other = self.coerce_arg(other)
+        return self.op('>>')(other)
+
+    def __lshift__(self, other, **kwargs):
+        other = self.coerce_arg(other)
+        return self.op('<<')(other)
+
     def contains(self, other, **kwargs):
         other = self.coerce_arg(other)
         return self.op('@>')(other)

tests/types/test_int_range.py

@@ -114,6 +114,38 @@ class TestIntRangeTypeOnPostgres(NumberRangeTestCase):
         )
         assert query.count()
 
+    @mark.parametrize(
+        'number_range',
+        (
+            [1, 3],
+            '1 - 3',
+            (0, 4),
+        )
+    )
+    def test_rshift_operator(self, number_range):
+        self.create_building([5, 6])
+        query = (
+            self.session.query(self.Building)
+            .filter(self.Building.persons_at_night >> number_range)
+        )
+        assert query.count()
+
+    @mark.parametrize(
+        'number_range',
+        (
+            [1, 3],
+            '1 - 3',
+            (0, 4),
+        )
+    )
+    def test_lshift_operator(self, number_range):
+        self.create_building([-1, 0])
+        query = (
+            self.session.query(self.Building)
+            .filter(self.Building.persons_at_night << number_range)
+        )
+        assert query.count()
+
     @mark.parametrize(
         'number_range',
         (