[issue3235] Improve subprocess module usage

[Martin Mokrejs]

Martin Mokrejs <mmokrejs at users.sourceforge.net> added the comment:

Georg, but would you please improve the docs explaining what communicate
really does? The syntax is nice but I don't see how can I use poll()
described in the same above to use that. Providing Examples section
would be the best. Of course I don't mind if the examples come from Doug
Hellman or not, as mentioned in msg68956. ;-) Or how about placing a
link to that page
(http://blog.doughellmann.com/2007/07/pymotw-subprocess.html)?

Please reopen unless better docs are available. I don't care about 2.6
either, sorry.

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