From cdd75e078ab548a3690113b3bdaeda47decba92a Mon Sep 17 00:00:00 2001
From: Karen Tracey <kmtracey@gmail.com>
Date: Sun, 17 Apr 2011 04:12:01 +0000
Subject: [PATCH] [1.3.X] Ensure stdin is a tty before handing it to termios,
 so as to prevent prolems when running under IDEs.

Backport of [15911] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.3.X@16029 bcc190cf-cafb-0310-a4f2-bffc1f526a37
---
 django/utils/autoreload.py | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/django/utils/autoreload.py b/django/utils/autoreload.py
index e5a421e586..ffa75e2c4f 100644
--- a/django/utils/autoreload.py
+++ b/django/utils/autoreload.py
@@ -73,11 +73,12 @@ def code_changed():
 
 def ensure_echo_on():
     if termios:
-        fd = sys.stdin.fileno()
-        attr_list = termios.tcgetattr(fd)
-        if not attr_list[3] & termios.ECHO:
-            attr_list[3] |= termios.ECHO
-            termios.tcsetattr(fd, termios.TCSANOW, attr_list)
+        fd = sys.stdin
+        if fd.isatty():
+            attr_list = termios.tcgetattr(fd)
+            if not attr_list[3] & termios.ECHO:
+                attr_list[3] |= termios.ECHO
+                termios.tcsetattr(fd, termios.TCSANOW, attr_list)
 
 def reloader_thread():
     ensure_echo_on()