Bruce Sass <[EMAIL PROTECTED]> writes:
> I think you will find the Python way more flexible once you get your
> head around it.
Yes, I understand that, and yes I wish I was good enough to anticipate
all exceptions -- but I'm not. Let me try again. As a python
programmer, one would expect the following to act as a fail safe, the
world is going to hell so do something bit of code:
try:
app.exec_loop ()
except:
print 'Caught an exception!'
where the "app.exec_loop()" is the PyQt event loop. No matter what
happens, the code "print 'Caught an exception!'" will never execute
since exec_loop() catches _all_ Python exceptions.
I understand (and agree) that this is desirable for most applications
and I'm not asking to change that. What I am looking for is a way to
allow my code to execute when an (unanticipated) exception happens.
What I don't think is reasonable is that everywhere I create a push
button, or a menu item, or a slider, or _any_ time I connect a
qt.SIGNAL() with a callable that I should have to wrap exception
handling code around that callable. Note: I am not saying I don't
catch errors in my code (callables). What I am saying is that I catch
the errors I expect but when an unexpected error occurs current
PyQt behaviour is for the error to silently disappear (effectively
since stdout is not visible).
--pete
----------------------------------------------------------------------
#! /bin/env python
# -*- Python -*-
import sys
import qt
class Test (qt.QFrame):
def __init__ (self, parent = None, name = ''):
qt.QFrame.__init__ (self, parent, name)
top = qt.QPushButton ('Exception', self)
top.setMinimumSize (top.sizeHint ())
top.connect (top, qt.SIGNAL ('clicked()'), self.raise_exception)
def raise_exception (self):
raise 'An exception. How can I catch this?'
w = None
def test ():
global w
app = qt.QApplication (sys.argv)
w = Test (None, 'Table')
app.setMainWidget (w)
w.show ()
return app
if __name__ == '__main__':
app = test ()
try:
app.exec_loop ()
except:
print 'Caught an exception!'
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