Python: adds ZSCORE command

glide-core/src/client/value_conversion.rs

@@ -86,6 +86,7 @@ pub(crate) fn expected_type_for_cmd(cmd: &Cmd) -> Option<ExpectedReturnType> {
             Some(ExpectedReturnType::Boolean)
         }
         b"SMEMBERS" => Some(ExpectedReturnType::Set),
+        b"ZSCORE" => Some(ExpectedReturnType::DoubleOrNull),
         _ => None,
     }
 }

glide-core/src/protobuf/redis_request.proto

@@ -102,6 +102,7 @@ enum RequestType {
     Zcard = 64;
     Zcount = 65;
     ZIncrBy = 66;
+    ZScore = 67;
 }
 
 message Command {

glide-core/src/socket_listener.rs

@@ -336,6 +336,7 @@ fn get_command(request: &Command) -> Option<Cmd> {
         RequestType::Zcard => Some(cmd("ZCARD")),
         RequestType::Zcount => Some(cmd("ZCOUNT")),
         RequestType::ZIncrBy => Some(cmd("ZINCRBY")),
+        RequestType::ZScore => Some(cmd("ZSCORE")),
     }
 }
 

python/python/glide/async_commands/core.py

@@ -1245,6 +1245,34 @@ async def zrem(
             await self._execute_command(RequestType.Zrem, [key] + members),
         )
 
+    async def zscore(self, key: str, member: str) -> Optional[float]:
+        """
+        Returns the score of `member` in the sorted set stored at `key`.
+
+        See https://redis.io/commands/zscore/ for more details.
+
+        Args:
+            key (str): The key of the sorted set.
+            member (str): The member whose score is to be retrieved.
+
+        Returns:
+            Optional[float]: The score of the member.
+            If `member` does not exist in the sorted set, None is returned.
+            If `key` does not exist,  None is returned.
+            If `key` holds a value that is not a sorted set, an error is returned.
+
+
+        Examples:
+            >>> await zscore("my_sorted_set", "member")
+                10.5  # Indicates that the score of "member" in the sorted set "my_sorted_set" is 10.5.
+            >>> await zscore("my_sorted_set", "non_existing_member")
+                None
+        """
+        return cast(
+            Optional[float],
+            await self._execute_command(RequestType.ZScore, [key, member]),
+        )
+
     async def invoke_script(
         self,
         script: Script,

python/python/glide/async_commands/transaction.py

@@ -915,6 +915,24 @@ def zrem(
         """
         self.append_command(RequestType.Zrem, [key] + members)
 
+    def zscore(self, key: str, member: str):
+        """
+        Returns the score of `member` in the sorted set stored at `key`.
+
+        See https://redis.io/commands/zscore/ for more details.
+
+        Args:
+            key (str): The key of the sorted set.
+            member (str): The member whose score is to be retrieved.
+
+        Commands response:
+            Optional[float]: The score of the member.
+            If `member` does not exist in the sorted set, None is returned.
+            If `key` does not exist,  None is returned.
+            If `key` holds a value that is not a sorted set, the transaction fails with an error
+        """
+        self.append_command(RequestType.ZScore, [key, member])
+
 
 class Transaction(BaseTransaction):
     """

python/python/tests/test_async_client.py

@@ -1069,6 +1069,18 @@ async def test_zcard(self, redis_client: TRedisClient):
         assert await redis_client.zrem(key, ["one"]) == 1
         assert await redis_client.zcard(key) == 2
 
+    @pytest.mark.parametrize("cluster_mode", [True, False])
+    async def test_zscore(self, redis_client: TRedisClient):
+        key = get_random_string(10)
+        members_scores = {"one": 1, "two": 2, "three": 3}
+        assert await redis_client.zadd(key, members_scores=members_scores) == 3
+        assert await redis_client.zscore(key, "one") == 1.0
+
+        assert await redis_client.zscore(key, "non_existing_member") == None
+        assert (
+            await redis_client.zscore("non_existing_key", "non_existing_member") == None
+        )
+
 
 class TestCommandsUnitTests:
     def test_expiry_cmd_args(self):

python/python/tests/test_transaction.py

@@ -90,6 +90,7 @@ def transaction_test(
     transaction.zadd_incr(key8, "one", 3)
     transaction.zrem(key8, ["one"])
     transaction.zcard(key8)
+    transaction.zscore(key8, "two")
     return [
         OK,
         value,
@@ -132,6 +133,7 @@ def transaction_test(
         4,
         1,
         2,
+        2.0,
     ]