Python object 识别（缓存）在交互 window 和使用 id() 命令时的脚本执行时不同？

Question

I know Python has a cache for objects with numerical values between -5 and 256. I can confirm this in Python interactive window (console). For example,

a = -10
b = -10
print(id(a))
1797396904912
print(id(b))
1797396904976
print(id(a) == id(b))
False

However, when I run exactly the same code via a script:

a = -10
b = -10
print(id(a))
print(id(b))
print(id(a) == id(b))

I get:

1797396904848
1797396904848
True

What's going on? (The question has nothing to do with another question on id of strings with and without a space).

Answer 1

No one seems to have an answer. I did a bit more exploration and found out that the problem exists in Anaconda but not in IDLE for a = -10 and b = -10.

However, the problem exists for c = 257 and d = 257. Different id(c) and id(d) when running in the interactive window. Same id(c) and id(d) when running IDLE script.