Hi Steve,
take a look at part 8.3 Handling Exceptions of the Python tutorial. It
states:
"The try ... except statement has an optional /else clause/, which, when
present, must follow all except clauses. It is useful for code that must
be executed if the try clause *does not* raise an exception."
Take a look at your code, now. If main raises any exception, it is
reraised and never handled. Furthermore the else clause is never
executed. I think the following piece of code demonstrates pretty clear
what happens:
import sys
def main():
print "In function main."
#raise
try:
main()
except:
print "Exception catched in __main__"
raw_input("Please press Enter to quit")
else:
print "In else-clause of try-except-else clause"
print "Press RETURN to exit..."
sys.stdin.readline()
Save it in a file and double click on it. The window remains open and
you will get the following output:
In function main.
In else-clause of try-except-else clause
Press RETURN to exit...
Uncomment the raise statement in function main. Double click, again. The
window remains open and you get the following output:
In function main.
Exception catched in __main__
Please press Enter to quit
HTH
Frank
[EMAIL PROTECTED] schrieb:
> Howdy,
>
> I installed Active State Python, and wrote a simple script, say
> 'foo.py'. If I double-click on 'foo.py' from the windows explorer, a
> console window opens, the script executes, and the window closes
> again.
>
> I'd like the window to stick around if there are any exceptions
> raised. I tried to put all my code in function main() and use
>
> try:
> main()
> except None:
> raise
> else:
> print "Press RETURN to exit..."
> sys.stdin.readline()
>
>
> No dice: the window closes even if main() raises an exception.
> Any idea how to do it?
>
> Thanks,
> -Steve
>
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