Mixing custom __setattr__ method and properties in new style classes
Fredrik Lundh
fredrik at pythonware.com
Wed Feb 8 12:25:25 EST 2006
"L.C. Rees" wrote:
> This is the code for the property at the end of the class definition:
>
> def _settext(self, txt):
> self._tree.text = txt
>
> def _gettext(self, txt):
> return self._tree.text
>
> def _deltext(self, txt):
> self._tree.text = ''
>
> text = property(_settext, _gettext, _deltext)
hint:
>>> help(property)
class property(object)
| property(fget=None, fset=None, fdel=None, doc=None) -> property attribute
|
| fget is a function to be used for getting an attribute value, and likewise
| fset is a function for setting, and fdel a function for del'ing, an
| attribute. Typical use is to define a managed attribute x:
| class C(object):
| def getx(self): return self.__x
| def setx(self, value): self.__x = value
| def delx(self): del self.__x
| x = property(getx, setx, delx, "I'm the 'x' property.")
</F>
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