Use typing.Self throughout library

discord/partial_emoji.py

@@ -24,7 +24,7 @@ DEALINGS IN THE SOFTWARE.
 
 from __future__ import annotations
 
-from typing import Any, Dict, Optional, TYPE_CHECKING, Type, TypeVar, Union
+from typing import Any, Dict, Optional, TYPE_CHECKING, Union
 import re
 
 from .asset import Asset, AssetMixin
@@ -37,6 +37,8 @@ __all__ = (
 # fmt: on
 
 if TYPE_CHECKING:
+    from typing_extensions import Self
+
     from .state import ConnectionState
     from datetime import datetime
     from .types.message import PartialEmoji as PartialEmojiPayload
@@ -51,9 +53,6 @@ class _EmojiTag:
         raise NotImplementedError
 
 
-PE = TypeVar('PE', bound='PartialEmoji')
-
-
 class PartialEmoji(_EmojiTag, AssetMixin):
     """Represents a "partial" emoji.
 
@@ -106,7 +105,7 @@ class PartialEmoji(_EmojiTag, AssetMixin):
         self._state: Optional[ConnectionState] = None
 
     @classmethod
-    def from_dict(cls: Type[PE], data: Union[PartialEmojiPayload, Dict[str, Any]]) -> PE:
+    def from_dict(cls, data: Union[PartialEmojiPayload, Dict[str, Any]]) -> Self:
         return cls(
             animated=data.get('animated', False),
             id=utils._get_as_snowflake(data, 'id'),
@@ -114,7 +113,7 @@ class PartialEmoji(_EmojiTag, AssetMixin):
         )
 
     @classmethod
-    def from_str(cls: Type[PE], value: str) -> PE:
+    def from_str(cls, value: str) -> Self:
         """Converts a Discord string representation of an emoji to a :class:`PartialEmoji`.
 
         The formats accepted are:
@@ -161,8 +160,13 @@ class PartialEmoji(_EmojiTag, AssetMixin):
 
     @classmethod
     def with_state(
-        cls: Type[PE], state: ConnectionState, *, name: str, animated: bool = False, id: Optional[int] = None
-    ) -> PE:
+        cls,
+        state: ConnectionState,
+        *,
+        name: str,
+        animated: bool = False,
+        id: Optional[int] = None,
+    ) -> Self:
         self = cls(name=name, animated=animated, id=id)
         self._state = state
         return self