Ned Deily added the comment:

Notice in the reply to Issue3907, "with 2.6, you have to use io.open() 
explicitly".  This is still true in Python 2.7, i.e. the new 3.x-compatible io 
library is not used by default in Python 2.  If you want to use it with 
subprocess.Popen, one way is to supply a pipe with an io wrapper, perhaps 
something like:

import io, os
i, o = os.pipe()
piperead = io.open(i,'rb',buffering=0)
p = subprocess.Popen(..., stdout=o)

See Chapter 15 of the Python 2.7 Standard Library doc for more information on 
the io module: http://docs.python.org/library/io.html

----------
nosy: +ned.deily
resolution:  -> works for me
stage:  -> committed/rejected
status: open -> closed

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue15532>
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