# 可变类型
# 值改变，id不变，证明改变的是原值
# int,float,str都被设计成了不可分割的整体，不能被改变

# 不可变类型
# 值改变，id也变，证明原值不可修改

# 验证
# int是不可变类型
x = 10
print(id(x))
x = 11  # 产生新值
print(id(x))

# float是不可变类型
x = 10.1
print(id(x))
x = 11.1  # 产生新值
print(id(x))

# str是不可变类型
x = "abc"
print(id(x))
x = "def"  # 产生新值
print(id(x))

# list是可变类型
x = ["aaa", "bbb", "ccc"]
print(id(x))
x[0] = "AAA"
print(id(x))

# dict（字典）是可变类型
dic = {"k1": "aaa", "k2": "bbb"}
print(id(dic))
dic["k1"] = "AAA"
print(id(dic))