#!/usr/bin/env python

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

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