Grid cpp error

wxPython Users
1

I'm doing this in preparation to reload a grid with fresh data:

         # Make sure the grid is empty and clean
         self.ClearGrid()
         r = self.GetNumberRows()
         if r > 0: self.DeleteRows(0, r)

Seems straightforward, but I get this:

PyAssertionError: C++ assertion "m_refData->m_count > 0" failed at ..\..\src\common\object.cpp(321) in wxObject::UnRef(): invalid ref data count

At this line of code in grid.py:

     def DeleteRows(*args, **kwargs):
         """DeleteRows(self, int pos=0, int numRows=1, bool updateLabels=True) -> bool"""
         return _grid.Grid_DeleteRows(*args, **kwargs)

Am I doing something wrong?

Thanks,
Michael

2

Michael Hipp wrote:

I'm doing this in preparation to reload a grid with fresh data:

        # Make sure the grid is empty and clean
        self.ClearGrid()
        r = self.GetNumberRows()
        if r > 0: self.DeleteRows(0, r)

Seems straightforward, but I get this:

PyAssertionError: C++ assertion "m_refData->m_count > 0" failed at ..\..\src\common\object.cpp(321) in wxObject::UnRef(): invalid ref data count

At this line of code in grid.py:

    def DeleteRows(*args, **kwargs):
        """DeleteRows(self, int pos=0, int numRows=1, bool updateLabels=True) -> bool"""
        return _grid.Grid_DeleteRows(*args, **kwargs)

Am I doing something wrong?

Probably not. It sounds more like a bug somewhere in the grid classes. Please create a small sample that shows the problem.

···

--
Robin Dunn
Software Craftsman
http://wxPython.org Java give you jitters? Relax with wxPython!

3

Robin Dunn wrote:

Michael Hipp wrote:

I'm doing this in preparation to reload a grid with fresh data:

        # Make sure the grid is empty and clean
        self.ClearGrid()
        r = self.GetNumberRows()
        if r > 0: self.DeleteRows(0, r)

Seems straightforward, but I get this:

PyAssertionError: C++ assertion "m_refData->m_count > 0" failed at ..\..\src\common\object.cpp(321) in wxObject::UnRef(): invalid ref data count

At this line of code in grid.py:

    def DeleteRows(*args, **kwargs):
        """DeleteRows(self, int pos=0, int numRows=1, bool updateLabels=True) -> bool"""
        return _grid.Grid_DeleteRows(*args, **kwargs)

Am I doing something wrong?

Probably not. It sounds more like a bug somewhere in the grid classes. Please create a small sample that shows the problem.

Thanks. Not sure I am able to do that. To my knowledge I've seen this error exactly once. But it caused a solid crash and that's what prompted my message. I'll keep trying to reproduce it.

Michael