KeyboardInterrupt in IIS?

[Mark Hammond]

fluxent at yahoo.com wrote:

> I'm running Python via ASP pages in IIS (win2k).
> 
> Occasionally I start getting errors when I ask for any page that look 
> like
> HTTP 500.100 - Internal Server Error - ASP error
> Internet Information Services
> 
> ----------------------------------------------------------------------
> ----------
> 
> Technical Information (for support personnel)
> 
> Error Type:
> Python ActiveX Scripting Engine (0x80020009)
> Traceback (innermost last): KeyboardInterrupt: 
> /test/biztrack/admin/timechargesReview.asp
> 
> It eventually seems to go away on its own, or else I reboot (gee, 
> thought I didn't have to do that anymore...)

I have no idea what causes this, but do seem to understand what Python 
is doing.

Python installs a Ctrl+C handler.  For some reason, it appears this 
handler fires at strange times, even when Python is _not_ running. 
However, Python still sets an internal flag.  Next time Python is 
entered, it immediately dies with this exception as the flag is set.

I think I need to change the code to ensure that Python ignores this and 
any other pending Python exception that is set whenever a COM call is 
entered.  Can anyone see a reason _not_ to do this?  We did it for xpcom 
and it solved similar issues.  It does however mean that Ctrl+C will 
generally only kill Python code if Python code is actually running as it 
is pressed.  This sounds OK to me...

Mark.