From 0aa8069dc478c32a4adeabfebc170104cf211fae Mon Sep 17 00:00:00 2001
From: mpa <mpa@snejugal.ru>
Date: Wed, 6 May 2020 03:05:43 +0400
Subject: [PATCH] fix(sessions):

make timeout deleter more clever in particular cases
---
 aiogram/api/client/session/base.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/aiogram/api/client/session/base.py b/aiogram/api/client/session/base.py
index 97137e7c..8213e4c3 100644
--- a/aiogram/api/client/session/base.py
+++ b/aiogram/api/client/session/base.py
@@ -59,7 +59,8 @@ class BaseSession(abc.ABC):
 
     @timeout.deleter
     def timeout(self) -> None:
-        del self._timeout
+        if hasattr(self, "_timeout"):
+            del self._timeout
 
     @classmethod
     def raise_for_status(cls, response: Response[T]) -> None: