redis: Add _Encodable type alias (#8638)

Author: sobolevn

stubs/redis/redis/cluster.pyi

@@ -8,7 +8,7 @@ from typing_extensions import Literal
 from redis.client import CaseInsensitiveDict, PubSub, Redis, _ParseResponseOptions
 from redis.commands import CommandsParser, RedisClusterCommands
 from redis.commands.core import _StrType
-from redis.connection import BaseParser, Connection, ConnectionPool, Encoder, _ConnectionPoolOptions
+from redis.connection import BaseParser, Connection, ConnectionPool, Encoder, _ConnectionPoolOptions, _Encodable
 from redis.exceptions import MovedError, RedisError
 from redis.typing import EncodableT
 
@@ -86,8 +86,7 @@ class RedisCluster(AbstractRedisCluster, RedisClusterCommands[_StrType], Generic
     def get_replicas(self) -> list[ClusterNode]: ...
     def get_random_node(self) -> ClusterNode: ...
     def get_nodes(self) -> list[ClusterNode]: ...
-    # TODO: use type alias for `str | bytes | memoryview | bool | float`
-    def get_node_from_key(self, key: str | bytes | memoryview | bool | float, replica: bool = ...) -> ClusterNode | None: ...
+    def get_node_from_key(self, key: _Encodable, replica: bool = ...) -> ClusterNode | None: ...
     def get_default_node(self) -> ClusterNode | None: ...
     def set_default_node(self, node: ClusterNode | None) -> bool: ...
     def monitor(self, target_node: Any | None = ...): ...
@@ -103,7 +102,7 @@ class RedisCluster(AbstractRedisCluster, RedisClusterCommands[_StrType], Generic
         lock_class: type[Incomplete] | None = ...,
         thread_local: bool = ...,
     ): ...
-    def keyslot(self, key: str | bytes | memoryview | bool | float) -> int: ...
+    def keyslot(self, key: _Encodable) -> int: ...
     def determine_slot(self, *args): ...
     def get_encoder(self) -> Encoder: ...
     def get_connection_kwargs(self) -> dict[str, Any]: ...

stubs/redis/redis/connection.pyi

@@ -68,12 +68,14 @@ class HiredisParser(BaseParser):
 
 DefaultParser: type[BaseParser]  # Hiredis or PythonParser
 
+_Encodable: TypeAlias = str | bytes | memoryview | bool | float
+
 class Encoder:
     encoding: str
     encoding_errors: str
     decode_responses: bool
     def __init__(self, encoding: str, encoding_errors: str, decode_responses: bool) -> None: ...
-    def encode(self, value: str | bytes | memoryview | bool | float) -> bytes: ...
+    def encode(self, value: _Encodable) -> bytes: ...
     def decode(self, value: str | bytes | memoryview, force: bool = ...) -> str: ...
 
 class Connection: