fix docstring missing for nlp and event handler

nonebot/natural_language.py

@@ -1,5 +1,6 @@
 import asyncio
 import warnings
+from functools import update_wrapper
 from typing import Set, Iterable, Optional, Callable, Union, NamedTuple
 
 from aiocqhttp import Event as CQEvent
@@ -14,7 +15,8 @@ from .typing import CommandName_T, CommandArgs_T
 
 class NLProcessor:
     __slots__ = ('func', 'keywords', 'permission', 'only_to_me',
-                 'only_short_message', 'allow_empty_message')
+                 'only_short_message', 'allow_empty_message', '__name__', '__qualname__', '__doc__',
+                 '__annotations__', '__dict__')
 
     def __init__(self, *, func: Callable, keywords: Optional[Iterable],
                  permission: int, only_to_me: bool, only_short_message: bool,
@@ -125,6 +127,7 @@ def on_natural_language(
             only_short_message=only_short_message,
             allow_empty_message=allow_empty_message)
         NLPManager.add_nl_processor(nl_processor)
+        update_wrapper(wrapper=nl_processor, wrapped=func)  # type: ignore
         return nl_processor
 
     if isinstance(keywords, Callable):

nonebot/notice_request.py

@@ -1,3 +1,4 @@
+from functools import update_wrapper
 from typing import List, Optional, Callable, Union
 
 from aiocqhttp import Event as CQEvent
@@ -11,7 +12,8 @@ from .session import BaseSession
 _bus = EventBus()
 
 class EventHandler:
-    __slots__ = ('events', 'func')
+    __slots__ = ('events', 'func', '__name__', '__qualname__', '__doc__',
+                 '__annotations__', '__dict__')
     
     def __init__(self, events: List[str], func: Callable):
         self.events = events
@@ -26,10 +28,12 @@ def _make_event_deco(post_type: str) -> Callable:
                 events_tmp = list(map(lambda x: f"{post_type}.{x}", [arg] + list(events)))
                 for e in events_tmp:
                     _bus.subscribe(e, func)
-                return EventHandler(events_tmp, func)
+                handler = EventHandler(events_tmp, func)
+                return update_wrapper(handler, func)  # type: ignore
             else:
                 _bus.subscribe(post_type, func)
-                return EventHandler([post_type], func)
+                handler = EventHandler([post_type], func)
+                return update_wrapper(handler, func)  # type: ignore
 
         if isinstance(arg, Callable):
             return deco(arg)  # type: ignore