[issue35646] python -v writes to stderr

[Deepak Joshi]

Deepak Joshi  added the comment:

Thank you for the reply Eric.
Thought the behaviour is pretty wierd and opened the issue.

On Thu, 3 Jan 2019, 2:28 pm Eric V. Smith 
> Eric V. Smith  added the comment:
>
> That's just the way it is with 2.7.
>
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[issue35646] python -v writes to stderr

[Eric V. Smith]

Eric V. Smith  added the comment:

That's just the way it is with 2.7.

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[issue35646] python -v writes to stderr

[Deepak Joshi]

Deepak Joshi  added the comment:

Hello,

-V and --version both write to stderr not stdout.

On Thu, 3 Jan 2019, 1:29 pm Eric V. Smith 
> Eric V. Smith  added the comment:
>
> -v writes to stderr, so this is the expected behavior. Although maybe this
> could be better documented.
>
> See issue 18338, where this was briefly discussed and a change was
> rejected.
>
> Maybe you're looking for -V (uppercase) or --version, which do write to
> stdout, at least in 3.x. I'm not sure where they write in 2.7, but it's
> much too late to change 2.7's behavior.
>
> I'm going to close this. If you find some of our documentation that says
> -v writes to stdout, then we can reopen this.
>
> This is not a Windows specific error, so I'm modifying the nosy list.
>
> --
> components: +Interpreter Core -Windows, ctypes
> nosy: +eric.smith -paul.moore, steve.dower, tim.golden, zach.ware
> resolution:  -> not a bug
> stage:  -> resolved
> status: open -> closed
> title: Subprocess.Popen('python -v',stdout=PIPE,stderr=PIPE,Shell=True)
> gives output in stderr -> python -v writes to stderr
>
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[issue35646] python -v writes to stderr

[Eric V. Smith]

Eric V. Smith  added the comment:

-v writes to stderr, so this is the expected behavior. Although maybe this 
could be better documented.

See issue 18338, where this was briefly discussed and a change was rejected.

Maybe you're looking for -V (uppercase) or --version, which do write to stdout, 
at least in 3.x. I'm not sure where they write in 2.7, but it's much too late 
to change 2.7's behavior.

I'm going to close this. If you find some of our documentation that says -v 
writes to stdout, then we can reopen this.

This is not a Windows specific error, so I'm modifying the nosy list.

--
components: +Interpreter Core -Windows, ctypes
nosy: +eric.smith -paul.moore, steve.dower, tim.golden, zach.ware
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed
title: Subprocess.Popen('python -v',stdout=PIPE,stderr=PIPE,Shell=True) gives 
output in stderr -> python -v writes to stderr

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