Creates an editable (pseudo-)inspector for a selected set of attributes of a given object

• master : tk master widget - object : the object, whose attributes we want to edit - attr_names : a list of attr_names

By making use of Python 2.2's capability of subclassing built-in types such as ints, information about editing etc. is conveyed. An attr must have: - validate(value) method [return 1, if value is a valid new value for attr]

The class of an attr can have the following mix-ins: - Popubable - WithDefault

__init__ (
        self,
        master,
        object,
        attr_names,
        )

body ( self,  master )

editWidget (
        self,
        master,
        object,
        attr_name,
        )

validate ( self )