init new bot

env/Lib/site-packages/aiogram/handlers/base.py

@@ -0,0 +1,46 @@
+from __future__ import annotations
+
+from abc import ABC, abstractmethod
+from typing import TYPE_CHECKING, Any, Dict, Generic, TypeVar, cast
+
+from aiogram.types import Update
+
+if TYPE_CHECKING:
+    from aiogram import Bot
+
+T = TypeVar("T")
+
+
+class BaseHandlerMixin(Generic[T]):
+    if TYPE_CHECKING:
+        event: T
+        data: Dict[str, Any]
+
+
+class BaseHandler(BaseHandlerMixin[T], ABC):
+    """
+    Base class for all class-based handlers
+    """
+
+    def __init__(self, event: T, **kwargs: Any) -> None:
+        self.event: T = event
+        self.data: Dict[str, Any] = kwargs
+
+    @property
+    def bot(self) -> Bot:
+        from aiogram import Bot
+
+        if "bot" in self.data:
+            return cast(Bot, self.data["bot"])
+        raise RuntimeError("Bot instance not found in the context")
+
+    @property
+    def update(self) -> Update:
+        return cast(Update, self.data.get("update", self.data.get("event_update")))
+
+    @abstractmethod
+    async def handle(self) -> Any:  # pragma: no cover
+        pass
+
+    def __await__(self) -> Any:
+        return self.handle().__await__()