拷貝

from copy import copy,deepcopy


class Dog:
    def __init__(self,name,color='黑色'):
        self.name = name
        self.color = color


class Person:
    def __init__(self,name,age=0,gender='女'):
        self.name = name
        self.age = age
        self.gender = gender


    def __repr__(self):
        return f'<{str(self.__dict__)[1:-1]},id:{id(self)}>'


# p1 = Person('小明')
# print(p1)


# 1.直接賦值
# p2 = p1
# print(p2)
# p2.name = '小白'
# print(p2)
# print(p1)


# 2.拷貝：不管怎么拷貝，都是復(fù)制原數(shù)據(jù)產(chǎn)生一個(gè)新的數(shù)據(jù)并且將新數(shù)據(jù)地址返回
p1 = Person('小明')
print('p1',p1)
p3 = copy(p1)
p4 = deepcopy(p1)
print('p3',p3)
print('p4',p4)


# 3.深淺拷貝的取別

print('=======================================')
p1 = Person('tom',19,'男')
p1.dog = Dog('大黃','黃色')
print(p1)
# 淺拷貝
p2 = copy(p1)
print('p2:',p2)



print('========================================')
p1 = Person('tom',19,'男')
p1.dog = Dog('大黃','黃色')
print(p1)

p2 = deepcopy(p1)
print('p2:',p2)