popen2.popen2,3,4 from Python 2.0 on NT 4.0 SP5
MarkH at ActiveState.com
Thu Oct 26 02:23:34 CEST 2000
Are you using a standard command interpreter (ie, cmd.exe)
Eg, I try your exact code ('sqlplus' isnt installed here, so it
Python 2.0 (#5, Sep 12 2000, 14:13:44) [MSC 32 bit (Intel)] on win32
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>>> import popen2
>>> x=popen2.popen3('sqlplus pf/pf at dds230pf3 @rowcount.sql')
So I have no idea why a simple test of a command failing doesnt work
> 1. Why does it hang? This seems like a bug. It should return with
> some known response, or nothing.
> 2. Is there a way to find out how many characters are left in the
> stdout/stderr buffers?
Umm - can't recall if a portable way exists? However, you should
definitely not get hangs.
> 3. This test is for winnt. Is unix different, and should I use
> win32all to workaround (I would rather not, if possible)?
win32all has the exact same code as python 2.0 for this.
> 4. Should I use threading, and use another thread to see when the
> readline() fails to return (messy)?
> 5. Is this a shelled process state problem, or a buffer state
> 6. Does this problem throw any exception?
It simply shouldn't behave like this, and I don't believe it will for
most other people.
Actually - my testing is Win2k - maybe some other NT4 users can chime
in (although I imagine they must be getting rarer - win2k is much
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