#!/usr/bin/env python

# -*- coding: utf-8 -*-

from __future__ import print_function

class Person(object):

    def __init__(self, name, action):

        self.name = name

        self.action = action

    def do_action(self):

        print(self.name, self.action.name, end=' ')

        return self.action

class Action(object):

    def __init__(self, name):

        self.name = name

    def amount(self, val):

        print(val, end=' ')

        return self

    def stop(self):

        print('then stop')

if __name__ == '__main__':

    move = Action('move')

    person = Person('Jack', move)

    person.do_action().amount('5m').stop()

### OUTPUT ###

# Jack move 5m then stop