From 877766dee8e60c7971ed0cabba89fbe981c2ab1b Mon Sep 17 00:00:00 2001
From: Antoine Pitrou <solipsis@pitrou.net>
Date: Sat, 19 Mar 2011 17:00:37 +0100
Subject: Issue #11459: A `bufsize` value of 0 in subprocess.Popen() really
 creates unbuffered pipes, such that select() works properly on them.

---
 Lib/platform.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Lib/platform.py')

diff --git a/Lib/platform.py b/Lib/platform.py
index 2294604ea4..dd09460aad 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -398,7 +398,7 @@ class _popen:
     # Alias
     __del__ = close
 
-def popen(cmd, mode='r', bufsize=None):
+def popen(cmd, mode='r', bufsize=-1):
 
     """ Portable popen() interface.
     """
-- 
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