[Python-bugs-list] popen2.popen3 and win32pipe.popen3 has unconsistancy interface. (PR#386)

[Mark Hammond]

Its not a bug - but it is a shame.

afaik, win32pipe.popen3 predates opoen2.popen3.

However, fixing either of these would have a backwards compatibility issue
that we simply can not address, or accept.

Mark.

> -----Original Message-----
> From: python-bugs-list-admin@python.org
> [mailto:python-bugs-list-admin@python.org]On Behalf Of
> 2jerry@writeme.com
> Sent: Wednesday, 5 July 2000 5:58 AM
> To: python-bugs-list@python.org
> Cc: bugs-py@python.org
> Subject: [Python-bugs-list] popen2.popen3 and win32pipe.popen3 has
> unconsistancy interface. (PR#386)
>
>
> Full_Name: Jerome.vacher
> Version: 1.5.2 (build 129)
> OS: Sun, SGI, NT, Win98
> Submission from: thotsc10.thomson-csf.fr (195.101.37.183)
>
>
> Hello,
> this is my second bug submission in 2 days and my second bug
> submission in my
> life :)
> Is it a bug ?
> Where is the bug ?
>
> posix     : popen2.popen3(output, input, error)
> win32pipe : win32pipe.popen3(input, output, error)
>
> Need an ntpopen.py module as ntpath.py do ? oh cool idea for the
> dude who does
> it.
> I used next code to continue using popen3 in that situation but
> what a shame to
> do so.
>
> [...]
> def CC_popen3(commande, mode):
>   global nb                                   # forget this ..
> this is just to
>   if V: print __module__+": IN CC_popen3",nb  # capture number
> of open pipe
>   nb = nb + 1                                 # seem to hang
> popen2.popen3
> after
>                                               # about 170 calls.
>                                               # (no further
> expert so forget)
>   if sys.platform == "win32":
>     from win32pipe import popen3
>     (i,o,e) = popen3(commande, mode)
>     return (i,o,e)
>   elif os.name == "posix":
>     from popen2 import popen3
>     (o,i,e) = popen3(commande, mode)
>     return (i,o,e)
>   else:
>     raise CC_env_error, "env: CC_popen3 : ERROR : Unsupported
> Operating System"
> [...]
>
> QUESTION / DISCUSSION:
>  what is the best way ? (i,o,e) or (o,i,e) ? i choose (i,o,e)
> cause this is a
> reading behaviour and is more comprehensive. I know that choose
> is subjective.
>  So what need the futur to be ?
>  Tel me that convergence is THE way. never mind about the order ;-)
>
> Jerome.vacher
> jerome.vacher@tts.thomson-csf.com / jvacher@on-x.com
> Alias Jerry 'the foolish dracomorpheus'.
>
>
>
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