[Pythoncard-users] Handling FutureWarnings in py2exe-generated console-less standalo nes

[Tim B. <tb...@bi...>]

I believe that my console-less py2exe-generated wxPython and PythonCard
standalones are crashing because of unhandled FutureWarnings(explanation
below). Does anyone know if/how FutureWarnings would/would not be handled in
a console-less py2exe-generated wxPython and PythonCard standalones?

I recently added some eval and execfile calls at the top of some of my apps
to allow the dynamic evaluation of constants contained in an external file
provided in its distribution. The resulting apps ran wonderfully under
python.exe, pythonw.exe, and even the console version of the py2exe app. But
the console-less version of the py2exe app crashes. 

It turned out that the problem was that one of the statements I was
evaluating generated an unhandled FutureWarning. Each eval is inside a
try/except block, but I was only attempting to catch
exceptions.StandardError. When I remove the line that was generating the
FutureWarning, the console-less version of the py2exe app works fine. This
behaviour can be reproduced by sticking:
eval(compile("x=0xffffffff","","single")) into the top of any wxPython or
PythonCard app and building it into a console-less standalone. 

Presumably, these warnings are what caused my console-less py2exe app crash.
So, a couple questions:

1. Why would FutureWarnings be treated so fatal in a console-less py2exe
app? In the console py2exe app, the FutureWarning is just printed to the
console and the app proceeds happily.

2. I would like to make my dynamic code execution more robust to these
warnings, but I have not been able to successfully catch them. I can see
that FutureWarning is in the built-in namespace as well as in the exceptions
module, but when I 

try:
	eval(compile("x=0xffffffff","","single"))
except FutureWarning:
	print "caught it!"

OR 

try:
	eval(compile("x=0xffffffff","","single"))
except exceptions.FutureWarning:
	print "caught it!"

, the warning is not caught. This might be a more general Python question,
but how does one catch and/or ignore FutureWarnings? 

Thanks,
Tim