Python: add ZCARD command

python/python/glide/async_commands/core.py

@@ -1184,6 +1184,24 @@ async def zadd_incr(
             await self._execute_command(RequestType.Zadd, args),
         )
 
+    async def zcard(self, key: str) -> int:
+        """
+        Returns the cardinality (number of elements) of the sorted set stored at `key`.
+
+        See https://redis.io/commands/zcard/ for more details.
+
+        Args:
+            key (str): The key of the sorted set.
+
+        Returns:
+            int: The number of elements in the sorted set.
+
+        Examples:
+            >>> await zcard("my_sorted_set")
+            3  # Indicates that there are 3 elements in the sorted set "my_sorted_set".
+        """
+        return cast(int, await self._execute_command(RequestType.Zcard, [key]))
+
     async def zrem(
         self,
         key: str,

python/python/glide/async_commands/transaction.py

@@ -877,6 +877,20 @@ def zadd_incr(
         args += [str(increment), member]
         self.append_command(RequestType.Zadd, args)
 
+    def zcard(self, key: str):
+        """
+        Returns the cardinality (number of elements) of the sorted set stored at `key`.
+
+        See https://redis.io/commands/zcard/ for more details.
+
+        Args:
+            key (str): The key of the sorted set.
+
+        Commands response:
+            int: The number of elements in the sorted set.
+        """
+        self.append_command(RequestType.Zcard, [key])
+
     def zrem(
         self,
         key: str,

python/python/tests/test_async_client.py

@@ -1055,6 +1055,16 @@ async def test_zrem(self, redis_client: TRedisClient):
 
         assert await redis_client.zrem("non_existing_set", ["member"]) == 0
 
+    @pytest.mark.parametrize("cluster_mode", [True, False])
+    async def test_zcard(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.zcard(key) == 3
+
+        assert await redis_client.zrem(key, ["one"]) == 1
+        assert await redis_client.zcard(key) == 2
+
 
 class TestCommandsUnitTests:
     def test_expiry_cmd_args(self):

python/python/tests/test_transaction.py

@@ -87,6 +87,7 @@ def transaction_test(
     transaction.zadd(key8, {"one": 1, "two": 2, "three": 3})
     transaction.zadd_incr(key8, "one", 3)
     transaction.zrem(key8, ["one"])
+    transaction.zcard(key8)
     return [
         OK,
         value,
@@ -128,6 +129,7 @@ def transaction_test(
         3,
         4,
         1,
+        2,
     ]