Help to delay list evaluation to the latest possible moment.

This class is useful if you have a function returning a list, and you might need a certain element from that list later. Encapsulating the call in a CalledElement will make sure that the function returning the list is only called when a reference is being made to this element.

__call__ (
        self,
        *arg,
        *kw,
        )

__getattr__ ( self,  attr )

__init__ (
        self,
        listfunc,
        itemno,
        )

__repr__ ( self )