I have an override of QIntValidate that is giving me a python exception
"maximum recursion depth exceeded". The code works as I desire in PyQt4, but
I wish to convert my project to using PySide. I don't really mind if PySide
has a different solution to the pass-by-reference conundrums of
QValidate::validate, but I don't know how to implement this any other way.
The PySide documentation [1] says that one can change either arg__1 or arg__2
of PySide.QtGui.QValidator.validate(arg__1, arg__2), but that seems like non-
sense in the python world since the int arg__2 is immutable.
The code that I have is
****
from PySide import QtGui,QtCore
class BlankIntValidator(QtGui.QIntValidator):
def validate(self,input,pos):
if input == "":
return QtGui.QValidator.Acceptable, input, pos
else:
return QtGui.QIntValidator.validate(self,input,pos)
app = QtGui.QApplication([])
edit = QtGui.QLineEdit()
edit.setValidator(BlankIntValidator(edit))
edit.show()
app.exec_()
****
The desired operation is that the BlankIntValidator return Acceptable for
blank strings as well as any integer string. The observed exception is
****
Exception RuntimeError: 'maximum recursion depth exceeded in
__subclasscheck__' in <type 'exceptions.RuntimeError'> ignored
Traceback (most recent call last):
File "test_blankable_int.py", line 12, in validate
return QtGui.QIntValidator.validate(self,input,pos)
RuntimeError: maximum recursion depth exceeded while calling a Python object
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python2.6/dist-packages/apport_python_hook.py", line 48, in
apport_excepthook
if not enabled():
File "/usr/lib/python2.6/dist-packages/apport_python_hook.py", line 21, in
enabled
import re
RuntimeError: maximum recursion depth exceeded while calling a Python object
Original exception was:
Traceback (most recent call last):
File "test_blankable_int.py", line 12, in validate
return QtGui.QIntValidator.validate(self,input,pos)
RuntimeError: maximum recursion depth exceeded while calling a Python object
****
Any comments on this as a bug in PySide or a better way to write this would be
much appreciated.
Thanks, Joel
[1] http://www.pyside.org/docs/pyside/PySide/QtGui/QValidator.html
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