引用:指针指向同一个对象
浅拷贝:只拷贝父对象,子对象的内容依旧是引用
深拷贝:完全拷贝
代码:
import copy a = [1,2,3,[4,5]] b = a c = copy.copy(a) d = copy.deepcopy(a) a.append(6) a[3].append(7) print "a",a print "b",b #因为是引用,和a完全一致 print "c",c #父对象完全拷贝,所以a怎么改父对象没影响,子对象[4,5]是引用,所以指向了[4,5,7] print "d",d #完全没影响
>>> a [1, 2, 3, [4, 5, 7], 6] b [1, 2, 3, [4, 5, 7], 6] c [1, 2, 3, [4, 5, 7]] d [1, 2, 3, [4, 5]] >>>