#ООП Дочерняя связь
class Calc(object):
        def __init__(self,number):
            self.number = number

        def calc_and_print(self):
            value= self.calc_value()
            self.print_number(value)

        def calc_value(self):
            return self.number*10+2
        def print_number(self, value_to_print):
            print('----')
            print('Number is', value_to_print)
            print('----')

class CalcExtraValue(Calc)
    def calc_value(self):
        return self.number - 100