# -*- coding: utf-8 -*-
class CPU:
    pass
class Disk:
    pass
class Computer:
    def __init__(self, cpu, disk):  # 給對(duì)象的實(shí)例屬性進(jìn)行初始化
        self.cpu = cpu
        self.disk = disk
# 變量的賦值
cp1 = Computer(cpu='CPU', disk='DISK')  # 創(chuàng)建CPU類的實(shí)例對(duì)象
cp2 = cp1  
# 變量的賦值,一個(gè)對(duì)象的實(shí)例采用兩個(gè)變量存儲(chǔ)，實(shí)際上還是指向一個(gè)對(duì)象
print(cp1, id(cp1))
print(cp2, id(cp2))

# -*- coding: utf-8 -*-
import copy
class CPU:
    pass
class Disk:
    pass
class Computer:
    def __init__(self, cpu, disk):  # 給對(duì)象的實(shí)例屬性進(jìn)行初始化
        self.cpu = cpu
        self.disk = disk
cpu = CPU()  # 創(chuàng)建一個(gè) CPU 類的實(shí)例對(duì)象
disk = Disk()  # 創(chuàng)建一個(gè)Disk 類對(duì)象
computer = Computer(cpu, disk)  # 創(chuàng)建一個(gè)Computer類的實(shí)例對(duì)象
# 淺拷貝
print(cpu)
print(disk)
computer2 = copy.copy(computer)  # 子對(duì)象不拷貝
print(computer, computer.cpu, computer.disk)
print(computer2, computer2.cpu, computer2.disk)
# 類的淺拷貝:
# Python的拷貝一般都是淺拷貝，拷貝時(shí)，對(duì)象包含的子對(duì)象內(nèi)容不拷貝
# 因此，源對(duì)象與拷貝對(duì)象會(huì)引用同一個(gè)子對(duì)象

# -*- coding: utf-8 -*-
import copy
class CPU:
    pass
class Disk:
    pass
class Computer:
    def __init__(self, cpu, disk):  # 給對(duì)象的實(shí)例屬性進(jìn)行初始化
        self.cpu = cpu
        self.disk = disk
cpu = CPU()  # 創(chuàng)建一個(gè) CPU 對(duì)象
disk = Disk()  # 創(chuàng)建一個(gè)硬盤類對(duì)象
computer = Computer(cpu, disk)  # 創(chuàng)建一個(gè)計(jì)算機(jī)類對(duì)象
# 深拷貝
computer1 = copy.deepcopy(computer)
print(computer, computer.cpu, computer.disk)
print(computer1, computer1.cpu, computer1.disk)
# 類的深拷貝
# 使用copy模塊的deepcopy函數(shù)，遞歸拷貝對(duì)象中包含的子對(duì)象
# 源對(duì)象和拷貝對(duì)象所有的子對(duì)象也不同