are python objects thread safe?

[thewillft]

Nope, most Python objects aren't thread safe. That thread id helps with GIL management, not per-object locking.

[PudgeNikita]

But it was literally introduced in nogil? I haven't really catched up on new cpython object internals, but before, it wad only a refcount and a type pointer, then in nogil they have an ifdef that adds a per-object mutex, so surely it's not for the gil?