[New-bugs-announce] [issue11990] redirected output - stdout writes newline as \n in windows

[James Hutchison]

New submission from James Hutchison <jamesghutchison at gmail.com>:

In windows, 64-bit, python *mostly* writes only a \n to stdout even though it's mode is 'w'. However it sometimes writes a \r\n on certain print statements and erratically when I have multiple processes writing to stdout.

Output looks fine in console, in IDLE, and using v.3.1

Example with multiple processes writing to stdout out using the same code: print("TESTCODE"); (note that in windows, the naked \n is ignored):

TESTCODETESTCODE
TESTCODE
TESTCODE
TESTCODETESTCODETESTCODE
TESTCODE

Windows program that calls python and receives its piped output is a C# .NET program.

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components: IO, Windows
messages: 135076
nosy: Jimbofbx
priority: normal
severity: normal
status: open
title: redirected output - stdout writes newline as \n in windows
type: behavior
versions: Python 3.2

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11990>
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