65 lines
1.9 KiB
Python
65 lines
1.9 KiB
Python
|
#!/usr/bin/env python
|
||
|
|
# -*- encoding: utf-8 -*-
|
||
|
|
"""
|
||
|
|
Topic: 类支持比较操作
|
||
|
|
Desc :
|
||
|
|
"""
|
||
|
|
|
||
|
|
from functools import total_ordering
|
||
|
|
|
||
|
|
|
||
|
|
class Room:
|
||
|
|
def __init__(self, name, length, width):
|
||
|
|
self.name = name
|
||
|
|
self.length = length
|
||
|
|
self.width = width
|
||
|
|
self.square_feet = self.length * self.width
|
||
|
|
|
||
|
|
|
||
|
|
@total_ordering
|
||
|
|
class House:
|
||
|
|
def __init__(self, name, style):
|
||
|
|
self.name = name
|
||
|
|
self.style = style
|
||
|
|
self.rooms = list()
|
||
|
|
|
||
|
|
@property
|
||
|
|
def living_space_footage(self):
|
||
|
|
return sum(r.square_feet for r in self.rooms)
|
||
|
|
|
||
|
|
def add_room(self, room):
|
||
|
|
self.rooms.append(room)
|
||
|
|
|
||
|
|
def __str__(self):
|
||
|
|
return '{}: {} square foot {}'.format(self.name,
|
||
|
|
self.living_space_footage,
|
||
|
|
self.style)
|
||
|
|
|
||
|
|
def __eq__(self, other):
|
||
|
|
return self.living_space_footage == other.living_space_footage
|
||
|
|
|
||
|
|
def __lt__(self, other):
|
||
|
|
return self.living_space_footage < other.living_space_footage
|
||
|
|
|
||
|
|
# Build a few houses, and add rooms to them
|
||
|
|
h1 = House('h1', 'Cape')
|
||
|
|
h1.add_room(Room('Master Bedroom', 14, 21))
|
||
|
|
h1.add_room(Room('Living Room', 18, 20))
|
||
|
|
h1.add_room(Room('Kitchen', 12, 16))
|
||
|
|
h1.add_room(Room('Office', 12, 12))
|
||
|
|
h2 = House('h2', 'Ranch')
|
||
|
|
h2.add_room(Room('Master Bedroom', 14, 21))
|
||
|
|
h2.add_room(Room('Living Room', 18, 20))
|
||
|
|
h2.add_room(Room('Kitchen', 12, 16))
|
||
|
|
h3 = House('h3', 'Split')
|
||
|
|
h3.add_room(Room('Master Bedroom', 14, 21))
|
||
|
|
h3.add_room(Room('Living Room', 18, 20))
|
||
|
|
h3.add_room(Room('Office', 12, 16))
|
||
|
|
h3.add_room(Room('Kitchen', 15, 17))
|
||
|
|
houses = [h1, h2, h3]
|
||
|
|
print('Is h1 bigger than h2?', h1 > h2) # prints True
|
||
|
|
print('Is h2 smaller than h3?', h2 < h3) # prints True
|
||
|
|
print('Is h2 greater than or equal to h1?', h2 >= h1) # Prints False
|
||
|
|
print('Which one is biggest?', max(houses)) # Prints 'h3: 1101-square-foot Split'
|
||
|
|
print('Which is smallest?', min(houses)) # Prints 'h2: 846-square-foot Ranch'
|