[Python-3000] os.popen versus subprocess.Popen

[Guido van Rossum]

IMO os.popen() is wrong here.

On Sat, Apr 12, 2008 at 4:33 PM, Tim Heaney <theaney at gmail.com> wrote:
> In Python 3.0, it seems that os.popen yields a string, whereas
>  subprocess.Popen yields bytes
>
>   $ ./python
>   Python 3.0a4 (r30a4:62119, Apr 12 2008, 18:15:16)
>   [GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2
>   Type "help", "copyright", "credits" or "license" for more information.
>   >>> import os, subprocess
>   >>> os.popen('date').readline()
>   'Sat Apr 12 19:08:05 EDT 2008\n'
>   >>> subprocess.Popen(['date'], stdout=subprocess.PIPE).communicate()[0]
>   b'Sat Apr 12 19:08:13 EDT 2008\n'
>
>  Is this intentional? If so, why should I expect this? Thanks!
>
>  Tim
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--Guido van Rossum (home page: http://www.python.org/~guido/)