The snippet adding support for logging even if code using it does not add handlers to module's logger. Shamelessly copied from python-requests.

default_logger.py

# Set default logging handler to avoid "No handler found" warnings.
import logging
try:  # Python 2.7+
    from logging import NullHandler
except ImportError:
    class NullHandler(logging.Handler):
        def emit(self, record):
            pass

logging.getLogger(__name__).addHandler(NullHandler())