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第二个spam=100是个新变量和原来的spam不是一个地址
In [1]: spam=42
In [2]: cheese=spam
In [3]: cheese
Out[3]: 42
In [4]: id(spam)
Out[4]: 8791398201456
In [5]: id(cheese)
Out[5]: 8791398201456
In [6]: spam=100
In [7]: id(spam)
Out[7]: 8791398203312
In [8]: id(cheese)
Out[8]: 8791398201456 |
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