bpo-41906: Accept built filters in dictConfig (GH-30756)

When configuring the logging stack, accept already built filters (or
just callables) in the filters array of loggers and handlers.
This facilitates passing quick callables as filters.

Automerge-Triggered-By: GH:vsajip

1 files changed, 5 insertions, 1 deletions

diff --git a/Lib/logging/config.py b/Lib/logging/config.py
index 9bc07ed..86a1e4e 100644
--- a/Lib/logging/config.py
+++ b/Lib/logging/config.py
@@ -694,7 +694,11 @@ class DictConfigurator(BaseConfigurator):
         """Add filters to a filterer from a list of names."""
         for f in filters:
             try:
-                filterer.addFilter(self.config['filters'][f])
+                if callable(f) or callable(getattr(f, 'filter', None)):
+                    filter_ = f
+                else:
+                    filter_ = self.config['filters'][f]
+                filterer.addFilter(filter_)
             except Exception as e:
                 raise ValueError('Unable to add filter %r' % f) from e