playing with logging

test.py

from logging.config import dictConfig
import logging

initial = {
    'version': 1,
    'disable_existing_loggers': False,
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
        },
    },
    'loggers': {
        'foo.bar': {
            'handlers': ['console'],
        },
    },
}

dictConfig(initial)

foobar1 = logging.getLogger('foo.bar')
foobar1.warn('warn from foo.bar (1)')
foobarbaz1 = logging.getLogger('foo.bar.baz')
foobarbaz1.warn('warn from foo.bar.baz (1)')

new = {
    'version': 1,
    'disable_existing_loggers': True,
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
        },
    },
    'loggers': {
        'foo': {
        },
    },
    'root': {
        'handlers': ['console'],
    },
}

dictConfig(new)

foobar2 = logging.getLogger('foo.bar')
foobar2.warn('warn from foo.bar (2)')
foobarbaz2 = logging.getLogger('foo.bar.baz')
foobarbaz2.warn('warn from foo.bar.baz (2)')