adding a to python path in main.py

import os
import sys
import logging
# Add lib to path.

libs_dirs = [os.path.join(os.path.dirname(__file__), 'lib'),
             os.path.join(os.path.dirname(__file__), 'libs')]

for libs_dir in libs_dirs:
    if libs_dir not in sys.path:
        logging.debug('Adding lib to path.')
        sys.path.insert(0, libs_dir)