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Strange Behavior on Python 3 Windows Command Line

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  Strange Behavior on Python 3 Windows Command Line waylan <waylan@gmail.com> - 2012-02-13 11:50 -0800
    Re: Strange Behavior on Python 3 Windows Command Line Arnaud Delobelle <arnodel@gmail.com> - 2012-02-13 20:16 +0000
    Re: Strange Behavior on Python 3 Windows Command Line Waylan Limberg <waylan@gmail.com> - 2012-02-13 15:47 -0500

#20361 — Strange Behavior on Python 3 Windows Command Line

When I try running any Python Script on the command line with Python
3.2 I get this weird behavior. The cursor dances around the command
line window and nothing ever happens. Pressing Ctr+C does nothing.
When I close the window (mouse click on X in top right corner), an
error dialog appears asking me to "force" it to close.

See a short (26 sec) video of it here: https://vimeo.com/36491748

Also, the printer suddenly starts printing multiple copies of the
contents of the command line window - which has wasted much paper.

Strangely it was working fine the other day. Then while debugging a
script it suddenly started do this and now does this for every script
I've run in Python 3.2. Multiple system reboots had no effect.
I also have Python 2.5 & 2.7 installed and they work fine.

Even the most basic script results in this behavior:

    if __name__ == "__main__":
        print("Hello, World!")

In an attempt to check the exact version of Python, even this causes
the strange behavior:

    c:\Python32\python.exe -V

I'm on Windows XP if that matters. IDLE (which works fine) tells me
I'm on Python 3.2.2

Any suggestions?

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#20364

On 13 February 2012 19:50, waylan <waylan@gmail.com> wrote:
> When I try running any Python Script on the command line with Python
> 3.2 I get this weird behavior. The cursor dances around the command
> line window and nothing ever happens. Pressing Ctr+C does nothing.
> When I close the window (mouse click on X in top right corner), an
> error dialog appears asking me to "force" it to close.

I'm not a Windows user, so I can't be of assistance but it may help
others if you explained how you installed Python 3.2 on your computer.
 Also have you tried reinstalling it?

> Strangely it was working fine the other day. Then while debugging a
> script it suddenly started do this and now does this for every script

How were you debugging?

-- 
Arnaud

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#20365

On Mon, Feb 13, 2012 at 3:16 PM, Arnaud Delobelle <arnodel@gmail.com> wrote:
>> Strangely it was working fine the other day. Then while debugging a
>> script it suddenly started do this and now does this for every script
>
> How were you debugging?

I think I may have been attempting to use pipes to redirect stdin
and/or stdout when the problem first presented itself.  Unfortunately,
once I closed the window, I lost whatever pipe combination I had
tried.

It just occurred to me that I was unsure if I had been doing that pipe
correctly, and that maybe I overwrote python.exe. Sure enough, the
modify date on that file indicated I overwrote it. A re-install has
resolved the problem.

It's just a little embarrassing that I didn't think of that until now,
but the fact that everything else seems to work was throwing me off.
Of course, everything else was running `pythonw.exe` not `python.exe`.

Anyway, thanks for the pointer Arnaud.

-- 
----
\X/ /-\ `/ |_ /-\ |\|
Waylan Limberg

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