From f676005de5782f53a55e71bd395165c04f10e2fe Mon Sep 17 00:00:00 2001
From: Lonami <totufals@hotmail.com>
Date: Tue, 9 Jul 2019 11:39:29 +0200
Subject: [PATCH] Update downloads.py

---
 telethon/client/downloads.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/telethon/client/downloads.py b/telethon/client/downloads.py
index c5a00358..67388e44 100644
--- a/telethon/client/downloads.py
+++ b/telethon/client/downloads.py
@@ -439,7 +439,8 @@ class DownloadMethods:
                     if inspect.isawaitable(r):
                         await r
 
-            if hasattr(f, 'flush') and callable(getattr(f, 'flush')):
+            # Not all IO objects have flush (see #1227)
+            if callable(getattr(f, 'flush', None)):
                 f.flush()
 
             if in_memory: