From a46a45d060680b3e5a5e73e608418c89189082c7 Mon Sep 17 00:00:00 2001
From: Lonami Exo <totufals@hotmail.com>
Date: Wed, 27 Jun 2018 13:57:17 +0200
Subject: [PATCH] Don't disconnect on del if already disconnected/loop closed

---
 telethon/client/telegrambaseclient.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/telethon/client/telegrambaseclient.py b/telethon/client/telegrambaseclient.py
index 064493e1..e980d811 100644
--- a/telethon/client/telegrambaseclient.py
+++ b/telethon/client/telegrambaseclient.py
@@ -309,6 +309,9 @@ class TelegramBaseClient(abc.ABC):
             await self._updates_handle
 
     def __del__(self):
+        if not self.is_connected() or self.loop.is_closed():
+            return
+
         # Python 3.5.2's ``asyncio`` mod seems to have a bug where it's not
         # able to close the pending tasks properly, and letting the script
         # complete without calling disconnect causes the script to trigger