Metaclass conflict TypeError exception: problem demonstration script
Gabriel Genellina
gagsl-py2 at yahoo.com.ar
Mon Feb 23 04:38:43 EST 2009
En Mon, 23 Feb 2009 07:32:52 -0200, Barak, Ron <Ron.Barak at lsi.com>
escribió:
> $ cat -n metaclass_test01.py | head
> 1 #!/usr/bin/env python
> 2
> 3 import sys
> 4 import wx
> 5 import CopyAndPaste
> 6
> 7 class ListControl(wx.Frame, CopyAndPaste):
> 8 #class ListControl(wx.Frame):
> 9 def __init__(self, parent, id, title, list, max_list_width):
> 10 wx.Frame.__init__(self,parent,id,title,size=(-1,-1),
> style=wx.DEFAULT_FRAME_STYLE)
>
> I get the metaclass conflict exception:
>
> $ python metaclass_test01.py
> Traceback (most recent call last):
> File "metaclass_test01.py", line 7, in <module>
> class ListControl(wx.Frame, CopyAndPaste):
> TypeError: Error when calling the metaclass bases
> metaclass conflict: the metaclass of a derived class must be a
> (non-strict) subclass of the metaclasses of all its bases
>
> I hope that now the problem is demonstrated more clearly, and the gurus
> out there could point me in the right direction towards a solution.
You want the CopyAndPaste *class*, not the *module*!
--
Gabriel Genellina
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