method-overloading-2.py

#method-overloading-1.py

import abc


class GetSetParent(object):

    __metaclass__ = abc.ABCMeta

    def __init__(self, value):
        self.val = 0

    def set_val(self, value):
        self.val = value

    def get_val(self):
        return self.val

    @abc.abstractmethod
    def showdoc(self):
        return


class GetSetList(GetSetParent):
    def __init__(self, value=0):
        self.vallist = [value]

    def get_val(self):
        return self.vallist[-1]

    def get_vals(self):
        return self.vallist

    def set_val(self, value):
        self.vallist.append(value)

    def showdoc(self):
        print(
            "GetSetList object, len {0}, store history of values set".format(
                len(self.vallist)
            )
        )