Python_每日习题_0007_copy

import copy
a = [1,2,3,4,[‘a‘,‘b‘]]

b = a   #赋值
c = a[:]    #浅拷贝
d = copy.copy(a)    #浅拷贝
e = copy.deepcopy(a)    #深拷贝

a.append(5)
a[4].append(‘c‘)

print(‘a=‘,a)
print(‘b=‘,b)
print(‘c=‘,c)
print(‘d=‘,d)
print(‘e=‘,e)

‘‘‘
a= [1, 2, 3, 4, [‘a‘, ‘b‘, ‘c‘], 5]
b= [1, 2, 3, 4, [‘a‘, ‘b‘, ‘c‘], 5]
c= [1, 2, 3, 4, [‘a‘, ‘b‘, ‘c‘]]
d= [1, 2, 3, 4, [‘a‘, ‘b‘, ‘c‘]]
e= [1, 2, 3, 4, [‘a‘, ‘b‘]]
‘‘‘

print(id(a))
print(id(b))
print(id(c))
print(id(d))
print(id(e))

‘‘‘
35502088
35502088
35500744
35621512
35621576
‘‘‘