dynamically inserting function into an object

[michael]

Hi,

below is a snipplet that could be seen as a part of a spreadsheet with
getter and setter properties and a way how to dynamically insert
function to be used when setting the value of a "cell" instance


import new
import inspect

class Cell (object):

    def __init__ (self, initialvalue = 0):
        self._func = None
        self.__value = initialvalue

    def setvalue (self, newvalue):
        if self._func:
            self.__value = self._recalculate (newvalue)
        else:
            self.__value = newvalue

    def getvalue (self):
        return self.__value

    def _recalculate (self, value):

        ret_value = self._func (value)

        return ret_value

    def delvalue (self):
        del self.__value


    value = property(getvalue, setvalue, delvalue, "I'm the 'value'
property.")

    def curry(self, func, *args):
        self._func =  new.function(func.func_code, func.func_globals,
argdefs=args)

    func = property(curry, "I'm the 'func' property.")

def func (value, firstcell, secondcell):
    return value + firstcell.value + secondcell.value

cell0 = Cell (10)
cell1 = Cell (20)

curriedcell = Cell (100)

print "uncurried initial %d " % (curriedcell.value)

curriedcell.value = 60

print "uncurried set %d " % (curriedcell.value)

curriedcell.curry (func, cell0, cell1)
curriedcell.value = 62

print "curried set %d " % (curriedcell.value)



Is there a better way to do this or am I totally on the wrong way ?

Regards

Michael