run.py
package/
        __init__.py
        logging/
                __init__.py
        ...

from package import main

main()

from __future__ import absolute_import
import logging
import logging.config

def main():
    logging.config.fileConfig(...)

class Logging(object):
    pass

from __future__ import absolute_import

import logging
import logging.config
from package.logging import Logging

def main():
    logging.config.fileConfig(...)

AttributeError: 'module' object has no attribute 'config'

from . import logging