import logging


def get_logger(name, level=logging.CRITICAL+1):
    """
    Create a suitable logger object for this module.
    The goal is not to change settings of the root logger, to avoid getting
    other modules' logs on the screen.
    If a logger exists with same name, reuse it. (Else it would have duplicate
    handlers and messages would be doubled.)
    The level is set to CRITICAL+1 by default, to avoid any logging.
    """
    # First, test if there is already a logger with the same name, else it
    # will generate duplicate messages (due to duplicate handlers):
    if name in logging.Logger.manager.loggerDict:
        #NOTE: another less intrusive but more "hackish" solution would be to
        # use getLogger then test if its effective level is not default.
        logger = logging.getLogger(name)
        # make sure level is OK:
        logger.setLevel(level)
        return logger
    # get a new logger:
    logger = logging.getLogger(name)
    # only add a NullHandler for this logger, it is up to the application
    # to configure its own logging:
    logger.addHandler(logging.NullHandler())
    logger.setLevel(level)
    return logger