Bug 452920

I'm not sure the example has ever worked. Widget just provides the setCallback
function and isn't supposed to be used as a real widget.

Any suggestions where the exception should be raised? Checking in all functions
if w == None wouldn't be very nice.

Okay.. I'll concede that checking that in every function is not nice.  After
your response and having browsed through the source would these 2 assumptions be
true:

1: You shouldn't be using Widget directly, ever?
2: Whenever inheriting Widget you should override the __init__ method

If so You could always do this:

class Widget:
    """Base class for NEWT toolkit - Do not use directly

    methods:

     - Widget(self)
     - setCallback(self, obj, data = None) :
          The callback for when object activated.
          data is passed to obj.
    """
    def setCallback(self, obj, data = None):
        if data:
            self.w.setCallback(obj, data)
        else:
            self.w.setCallback(obj)

    def __init__(self):
        raise NotImplementedError

This was per the definition located at Python's Module Exception page[1], which
states:
"exception NotImplementedError
    This exception is derived from RuntimeError. In user defined base classes,
abstract methods should raise this exception when they require derived classes
to override the method. New in version 1.5.2. "

Of course if the above 2 assumptions are not true, I'm going to have to think
about it a bit more.

[1]http://docs.python.org/lib/module-exceptions.html

triaged

Ok, I've put the fix in upstream git. Will be in the next release.

Thanks.

awesome.  thanks.

Fixed in newt-0.52.10-1.fc10.

newt-0.52.10-1.fc9 has been submitted as an update for Fedora 9

newt-0.52.10-1.fc9 has been pushed to the Fedora 9 stable repository.  If problems still persist, please make note of it in this bug report.