Python开发——数据结构【深浅拷贝】

浅拷贝

 # 浅拷贝只copy一层

 s = [3,'Lucy',4,[1,2]]
 s1 = s.copy()
 print(id(s))    #
 print(id(s1))   #
 print(id(s[1]))     #
 print(id(s1[1]))    #
 print(id(s[3][1]))      #
 print(id(s1[3][1]))     #

深拷贝

 # 深拷贝——克隆一分
 import copy

 s = [3,'Lucy',4,[1,2]]
 s2 = copy.deepcopy(s)

 s2[2] = 5
 s[3][1] = 6
 print(s)        # [3, 'Lucy', 4, [1, 6]]
 print(s2)       # [3, 'Lucy', 5, [1, 2]]

 print(id(s))    #
 print(id(s2))   #

 print(id(s[0]))     #
 print(id(s2[0]))    #

 print(id(s[2]))     #
 print(id(s2[2]))    #
 print(id(s[3][1]))      #
 print(id(s2[3][1]))     #