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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def del_instance(self, obj):
 """Remove any stored instance methods that belong to an object Args: obj: The instance object to remove """

        to_remove = set()
        for wrkey, _obj in self.iter_instances():
            if obj is _obj:
                to_remove.add(wrkey)
        for wrkey in to_remove:
            del self[wrkey]