In [1]: l = [1,2,3]
In [2]: id(l)
Out[2]: 2330596352328
In [3]: l *= 2
In [4]: l
Out[4]: [1, 2, 3, 1, 2, 3]
In [5]: id(l)
Out[5]: 2330596352328
In [6]: t = (1, 2, 3)
In [7]: id(t)
Out[7]: 2330596337272
In [8]: t *= 2
In [9]: t
Out[9]: (1, 2, 3, 1, 2, 3)
In [10]: id(t)
Out[10]: 2330594190536- 可变对象上：原地增长
- 不可变序列：创建新对象
