logging.Formatter and logging.Filter are missing __repr__

[JackDanger]

logging.Handler and logging.StreamHandler both have useful repr implementations:

>>> import logging
>>> logging.StreamHandler()
<StreamHandler <stderr> (NOTSET)>

But Formatter and Filter don't, so you just get the default unhelpful object repr:

>>> logging.Formatter('%(message)s')
<logging.Formatter object at 0x...>
>>> logging.Filter('myapp')
<logging.Filter object at 0x...>

These should have repr consistent with the existing style, e.g.:

>>> logging.Formatter('%(message)s')
<Formatter (%(message)s)>
>>> logging.Filter('myapp')
<Filter (myapp)>

This would help when inspecting logging configurations in the REPL or debugger.

Linked PRs

• gh-145650: Add logging.{Formatter,Filter}.__repr__ #145652

[picnixz]

@vsajip Are you ok with this addition?

[vsajip]

Are you ok with this addition?

Yes. Technically it's backwards-incompatible behaviour, but in practice it's very unlikely that any code is relying on the old representations.