From 4c0d4065c5b1419519d5161e30bc183658448a88 Mon Sep 17 00:00:00 2001
From: scdhh <51957264+shoucandanghehe@users.noreply.github.com>
Date: Thu, 9 Feb 2023 10:24:27 +0800
Subject: [PATCH] :sparkles: Use `raise from e` when load driver error (#1689)

---
 nonebot/drivers/aiohttp.py    | 4 ++--
 nonebot/drivers/fastapi.py    | 4 ++--
 nonebot/drivers/httpx.py      | 4 ++--
 nonebot/drivers/quart.py      | 4 ++--
 nonebot/drivers/websockets.py | 4 ++--
 5 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/nonebot/drivers/aiohttp.py b/nonebot/drivers/aiohttp.py
index 32814279..e4b6267d 100644
--- a/nonebot/drivers/aiohttp.py
+++ b/nonebot/drivers/aiohttp.py
@@ -27,10 +27,10 @@ from nonebot.drivers import HTTPVersion, ForwardMixin, ForwardDriver, combine_dr
 
 try:
     import aiohttp
-except ImportError:  # pragma: no cover
+except ImportError as e:  # pragma: no cover
     raise ImportError(
         "Please install aiohttp first to use this driver. `pip install nonebot2[aiohttp]`"
-    ) from None
+    ) from e
 
 
 class Mixin(ForwardMixin):
diff --git a/nonebot/drivers/fastapi.py b/nonebot/drivers/fastapi.py
index 7ac9cc45..aa76ff78 100644
--- a/nonebot/drivers/fastapi.py
+++ b/nonebot/drivers/fastapi.py
@@ -37,10 +37,10 @@ try:
     from fastapi.responses import Response
     from fastapi import FastAPI, Request, UploadFile, status
     from starlette.websockets import WebSocket, WebSocketState, WebSocketDisconnect
-except ImportError:  # pragma: no cover
+except ImportError as e:  # pragma: no cover
     raise ImportError(
         "Please install FastAPI by using `pip install nonebot2[fastapi]`"
-    ) from None
+    ) from e
 
 
 def catch_closed(func):
diff --git a/nonebot/drivers/httpx.py b/nonebot/drivers/httpx.py
index c3c1165b..eb55c2be 100644
--- a/nonebot/drivers/httpx.py
+++ b/nonebot/drivers/httpx.py
@@ -31,10 +31,10 @@ from nonebot.drivers import (
 
 try:
     import httpx
-except ImportError:  # pragma: no cover
+except ImportError as e:  # pragma: no cover
     raise ImportError(
         "Please install httpx by using `pip install nonebot2[httpx]`"
-    ) from None
+    ) from e
 
 
 class Mixin(ForwardMixin):
diff --git a/nonebot/drivers/quart.py b/nonebot/drivers/quart.py
index 9169d81a..f16134e3 100644
--- a/nonebot/drivers/quart.py
+++ b/nonebot/drivers/quart.py
@@ -37,10 +37,10 @@ try:
     from quart import Quart, Request, Response
     from quart.datastructures import FileStorage
     from quart import Websocket as QuartWebSocket
-except ImportError:  # pragma: no cover
+except ImportError as e:  # pragma: no cover
     raise ImportError(
         "Please install Quart by using `pip install nonebot2[quart]`"
-    ) from None
+    ) from e
 
 _AsyncCallable = TypeVar("_AsyncCallable", bound=Callable[..., Coroutine])
 
diff --git a/nonebot/drivers/websockets.py b/nonebot/drivers/websockets.py
index 3dc166a1..808ff791 100644
--- a/nonebot/drivers/websockets.py
+++ b/nonebot/drivers/websockets.py
@@ -30,10 +30,10 @@ from nonebot.drivers import ForwardMixin, ForwardDriver, combine_driver
 try:
     from websockets.exceptions import ConnectionClosed
     from websockets.legacy.client import Connect, WebSocketClientProtocol
-except ImportError:  # pragma: no cover
+except ImportError as e:  # pragma: no cover
     raise ImportError(
         "Please install websockets by using `pip install nonebot2[websockets]`"
-    ) from None
+    ) from e
 
 logger = logging.Logger("websockets.client", "INFO")
 logger.addHandler(LoguruHandler())