[issue44803] change tracemalloc.BaseFilter to an abstract class

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

I don't see the benefit of the PR 27527. "BaseFilter" contains "Base" in its name and its only *private* method raises NotImplementedError. Maybe my design mistake (I wrote the tracemalloc module) was to expose it in the first place.

I suggest to leave the code as it is. As Łukasz wrote, there are other stdlib modules using "base" or "abstract" classes without using the abc module.

----------
nosy: +vstinner

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44803>
_______________________________________