Hello,

The API provided by PEP 445 makes it possible to intercept allocation requests through hooks, but it seems that both user allocations and interpreter allocations are sent to the hooks.

Here, user allocations refer to those that are triggered explicitly by the code (e.g. memory allocations to hold the integer created by x = 1), and interpreter allocations refer to everything else (e.g. memory allocations for internal states).

I've poked around a bit in the interpreter source code, and I think such differentiations aren't being done at all, so all allocations are directed to the same set of API. If that's indeed the case, why is the interpreter implemented this way? Would it make sense to implement the differentiation?

Thanks
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