[Python-Dev] windows buildbot failures

[Tim Peters]

[Andrew MacIntyre]
> I doubt it has anything to do with this issue, but I just thought I'd
> mention something strange I've encountered on Windows XP Pro (SP2) at
> work.
>
> If Python terminates due to an uncaught exception, with stdout & stderr
> redirected externally (ie within the batch file that started Python),

What batch file?

> the files that were redirected to cannot be deleted/renamed until the
> system is rebooted.

This really needs an executable example.  Here's my best guess about
what you mean, but I don't see any of what you're describing on WinXP
Pro SP2:

"""
$ type batty.py
import sys

i = 0
for line in sys.stdin:
    sys.stdout.write(line)
    i += 1
    if i == 3:
        raise "uncaught exception"

$ type runpy.bat
@python batty.py < stdin.txt > stdout.txt 2>stderr.txt

$ type stdin.txt
a
b
c
d
e
f
g
h
i

$ runpy.bat

$ type stdout.txt
a
b
c

$ type stderr.txt
batty.py:8: DeprecationWarning: raising a string exception is deprecated
  raise "uncaught exception"
Traceback (most recent call last):
  File "batty.py", line 8, in <module>
    raise "uncaught exception"
uncaught exception

$ del stdout.txt

$ del stderr.txt

$ dir/b std*.txt
stdin.txt
"""

I'll note that stdin.txt can also be deleted when runpy.bat finishes.

> If a bare except is used to trap any such exceptions (and the traceback
> printed explicitly) so that Python terminates normally, there is no
> problem (ie the redirected files can be deleted/renamed etc).
>
> I've never reported this as a Python bug

If you do, I'll probably add a comment like the above ;-)

> because I've considered the antivirus SW likely to be the culprit.

Could be.  FWIW, Norton AV was running during the above.

> I don't recall seeing this with Windows 2000, but much was changed
> in the transition from the Win2k SOE to the WinXP SOE.

What's that?  Shitty Out-of-box Experience ;-)?