add holidays_between function

tests/test_init.py

@@ -172,4 +172,13 @@ def test_supported_holidays_are_complete(self):
             names.add(v["nom_vacances"])
 
         expected = set(SchoolHolidayDates.SUPPORTED_HOLIDAY_NAMES)
-        self.assertEqual(names, expected)
+
+        self.assertEquals(names, expected)
+
+    def test_holidays_between(self):
+        d = SchoolHolidayDates()
+
+        res = d.holidays_between('2022-01-01', '2022-02-01')
+        for k, v in res.items():
+            self.assertEquals(sorted(v.keys()), self.EXPECTED_KEYS)
+

vacances_scolaires_france/__init__.py

@@ -108,3 +108,18 @@ def holidays_for_year_zone_and_name(self, year, zone, name):
             for k, v in self.holidays_for_year(year).items()
             if self.is_holiday_for_zone(k, zone) and v["nom_vacances"] == name
         }
+
+    def holidays_between(self, start_date, end_date):
+        """
+        To get holidays between 2 dates
+        :param start_date: the 1st bound of the interval
+        :param end_date: the 2nd bound of the interval
+        :return: dict
+        """
+        start_date = datetime.datetime.strptime(start_date, '%Y-%m-%d').date()
+        end_date = datetime.datetime.strptime(end_date, '%Y-%m-%d').date()
+
+        res = {k: v for k, v in self.data.items() if start_date <= k <= end_date}
+        return res
+
+