Mailing List Archive

I'm trying to run the demo code which came with the O'Reilly
Programming Python book. Specifically the "formgui.py" program
in the dbase directory.

When I try the "next" button I get this error message on stdout:

Exception in Tkinter callback
Traceback (innermost last):
File "/usr/local/lib/python1.5/lib-tk/Tkinter.py", line 752, in __call__
return apply(self.func, args)
File "formgui.py", line 51, in onNext
self.display()
File "formgui.py", line 61, in display
self.keytext(key) # change key in main box
AttributeError: no __call__ method defined


The "next" method given in the book and source sample, in its
entirety is:

def onNext(self):
if self.cursor >= len(self.index)-1:
self.infobox('Advance', "End of table")
else:
self.cursor = self.cursor + 1
self.display()


And at this point I'm lost:( I'm assuming that this was valid
code under 1.3, the version used in the book, and that it's
no longer valid. But I'd love to have someone tell me why:)

All hints, clues, comments welcome. Python 1.5.1, FreeBSD 2.2.7R.


Thanks,

David Miller