[New-bugs-announce] [issue15532] "for line in file" is *still* broken in Python 2.7

[Andy Lutomirski]

New submission from Andy Lutomirski:

This program:

import subprocess, sys
p = subprocess.Popen(['bash', '-c', 'while true; do echo x; sleep 1; done'], bufsize=0, stdout=subprocess.PIPE)

for line in p.stdout:
    sys.stdout.buffer.write(line)
    sys.stdout.flush()

sits around and does nothing on Python 2.7.3.  It works (i.e. prints 'x' once per second) on Python 3.

This was http://bugs.python.org/issue3907 and is supposedly fixed, but it's not.

----------
components: IO
messages: 167170
nosy: Andy.Lutomirski
priority: normal
severity: normal
status: open
title: "for line in file" is *still* broken in Python 2.7
type: behavior
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15532>
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