import copy
a=”deepak”
b=1,2,3,4
c=[1,2,3,4]
d={1:10,2:20,3:30}
a1=copy.copy(a)
b1=copy.copy(b)
c1=copy.copy(c)
d1=copy.copy(d)
print "immutable - id(a)==id(a1)",id(a)==id(a1)
print "immutable - id(b)==id(b1)",id(b)==id(b1)
print "mutable - id(c)==id(c1)",id(c)==id(c1)
print "mutable - id(d)==id(d1)",id(d)==id(d1)
我得到以下结果-
immutable - id(a)==id(a1) True
immutable - id(b)==id(b1) True
mutable - id(c)==id(c1) False
mutable - id(d)==id(d1) False
如果我做深度复制-
a1=copy.deepcopy(a)
b1=copy.deepcopy(b)
c1=copy.deepcopy(c)
d1=copy.deepcopy(d)
结果是一样的-
immutable - id(a)==id(a1) True
immutable - id(b)==id(b1) True
mutable - id(c)==id(c1) False
mutable - id(d)==id(d1) False
如果我从事外派工作-
a1=a
b1=b
c1=c
d1=d
结果是-
immutable - id(a)==id(a1) True
immutable - id(b)==id(b1) True
mutable - id(c)==id(c1) True
mutable - id(d)==id(d1) True
有人能解释一下是什么让拷贝之间有区别吗?它是与可变的、不变的对象有关的东西吗?如果是的话,你能给我解释一下吗?
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