Zrangestore (#1521)

Author: AvitalFineRedis

redis/client.py

@@ -3056,6 +3056,15 @@ def zrange(self, name, start, end, desc=False, withscores=False,
         }
         return self.execute_command(*pieces, **options)
 
+    def zrangestore(self, dest, name, start, end):
+        """
+        Stores in ``dest`` the result of a range of values from sorted set
+        ``name`` between ``start`` and ``end`` sorted in ascending order.
+
+        ``start`` and ``end`` can be negative, indicating the end of the range.
+        """
+        return self.execute_command('ZRANGESTORE', dest, name, start, end)
+
     def zrangebylex(self, name, min, max, start=None, num=None):
         """
         Return the lexicographical range of values from sorted set ``name``

tests/test_commands.py

@@ -1605,6 +1605,16 @@ def test_zrange(self, r):
         assert r.zrange('a', 0, 1, withscores=True, score_cast_func=int) == \
             [(b'a1', 1), (b'a2', 2)]
 
+    @skip_if_server_version_lt('6.2.0')
+    def test_zrangestore(self, r):
+        r.zadd('a', {'a1': 1, 'a2': 2, 'a3': 3})
+        assert r.zrangestore('b', 'a', 0, 1)
+        assert r.zrange('b', 0, -1) == [b'a1', b'a2']
+        assert r.zrangestore('b', 'a', 1, 2)
+        assert r.zrange('b', 0, -1) == [b'a2', b'a3']
+        assert r.zrange('b', 0, -1, withscores=True) == \
+               [(b'a2', 2), (b'a3', 3)]
+
     @skip_if_server_version_lt('2.8.9')
     def test_zrangebylex(self, r):
         r.zadd('a', {'a': 0, 'b': 0, 'c': 0, 'd': 0, 'e': 0, 'f': 0, 'g': 0})