#!/usr/bin/env python3

class A:

    def lal(self, x):
        if x < 2:
            print('x is less than 2')
        else:
            self.sasay(x)

    def sasay(self, x=0):
        print('x is greater or equal to 2')


class B(A):

    def sasay(self, x=0):
        if x < 5:
            print('x is less than 5')
        else:
            print('x is greater or equal to 5')


a = A()
a.lal(1)
a.lal(2)

b = B()
b.lal(1)
b.lal(2)
b.lal(5)