```

>>> 5 is 5.0 #id(5) == id(5.0)? → 0x7fdb6ef01f78 == 0x7fdb6ee01de0?
False
>>> 5 is 5 #id(5) == id(5)? → 0x7fdb6ef01f78 == 0x7fdb6ef01f78?
True
>>> 5 is int(4.0+1) #id(5) == id(int(4.0+1))? → id(5) == id(int(4.0+1))? → 0x7fdb6ef01f78 == 0x7fdb6ef01f78?
True

```