From a383a98af617265803cbfa38f540d5f412899c3c Mon Sep 17 00:00:00 2001
From: Philipp Hagemeister <phihag@phihag.de>
Date: Wed, 30 Apr 2014 10:07:32 +0200
Subject: [PATCH] [utils/_windows_write_string] Be defensive about fileno
 (Fixes #2820)

---
 youtube_dl/utils.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 2a93d3e34..1036ea9bd 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -926,7 +926,11 @@ def _windows_write_string(s, out):
         2: -12,
     }
 
-    fileno = out.fileno()
+    try:
+        fileno = out.fileno()
+    except AttributeError:
+        # If the output stream doesn't have a fileno, it's virtual
+        return False
     if fileno not in WIN_OUTPUT_IDS:
         return False