In the package logging, the parameter disable_existing_loggers used in the functions logging.config.dictConfig and logging.config.fileConfig does not affect the root logger. More precisely, calling those functions with the parameter disable_existing_loggers set to True or False leaves the attribute disabled of the root logger unchanged (while it sets it to True for non-root loggers). So it is either a bug or the documentation should be updated. This PR updates the documentation.

Illustration:

import logging.config

assert logging.getLogger().disabled is False
assert logging.getLogger("foo").disabled is False

logging.config.dictConfig({"version": 1})

assert logging.getLogger().disabled is False
assert logging.getLogger("foo").disabled is True

https://bugs.python.org/issue35722