Add support for LMPOP (#1843)

* Add support for LMPOP

* add type hints

* fix linters

Author: dvora-h

redis/commands/core.py

@@ -1917,6 +1917,25 @@ def brpoplpush(self, src, dst, timeout=0):
             timeout = 0
         return self.execute_command("BRPOPLPUSH", src, dst, timeout)
 
+    def lmpop(
+        self,
+        num_keys: int,
+        *args: List[str],
+        direction: str = None,
+        count: Optional[int] = 1,
+    ) -> List:
+        """
+        Pop ``count`` values (default 1) first non-empty list key from the list
+        of args provided key names.
+
+        For more information check https://redis.io/commands/lmpop
+        """
+        args = [num_keys] + list(args) + [direction]
+        if count != 1:
+            args.extend(["COUNT", count])
+
+        return self.execute_command("LMPOP", *args)
+
     def lindex(self, name, index):
         """
         Return the item from list ``name`` at position ``index``

tests/test_commands.py

@@ -1480,6 +1480,17 @@ def test_brpoplpush_empty_string(self, r):
         r.rpush("a", "")
         assert r.brpoplpush("a", "b") == b""
 
+    @pytest.mark.onlynoncluster
+    # @skip_if_server_version_lt("7.0.0") turn on after redis 7 release
+    def test_lmpop(self, unstable_r):
+        unstable_r.rpush("foo", "1", "2", "3", "4", "5")
+        result = [b"foo", [b"1", b"2"]]
+        assert unstable_r.lmpop("2", "bar", "foo", direction="LEFT", count=2) == result
+        with pytest.raises(redis.ResponseError):
+            unstable_r.lmpop("2", "bar", "foo", direction="up", count=2)
+        unstable_r.rpush("bar", "a", "b", "c", "d")
+        assert unstable_r.lmpop("2", "bar", "foo", direction="LEFT") == [b"bar", [b"a"]]
+
     def test_lindex(self, r):
         r.rpush("a", "1", "2", "3")
         assert r.lindex("a", "0") == b"1"