Python based stdout logger and logger using logging.handlers.SysLogHandler

python_sysloghandler.py

import logging
from logging.handlers import SysLogHandler
import sys


def create_logger(name, verbosity):
    """create_logger uses a name and verbosity level. The name is most commonly
    the __name__ variable and verbosity is most often passed to the program
    from command line arguments via ConfigParser/configparser. This then sets
    the log level to Warning (no verbosity), Information (verbosity 1), or
    Debug (verbosity 2). If the verbosity is greater than 2, it is reduced to
    the maximum log level permitted by the application, where maximum is the
    most verbose logging option. create_logger then returns a tuple of the log
    instance and the log level which was set. The log level value is defined by
    the python logging package.
    """
    log_level = {
        0: logging.WARNING,
        1: logging.INFO,
        2: logging.DEBUG,
    }.get(verbosity, logging.WARNING)

    log = logging.getLogger(name)
    log.setLevel(log_level)

    stdout_handler = logging.StreamHandler()
    log.addHandler(stdout_handler)

    if sys.platform == "darwin":
        # Apple made 10.5+ more secure by disabling network syslog:
        address = "/var/run/syslog"
    elif sys.platform == 'linux2':
        address = '/dev/log'
    else:
        address = ('localhost', 514)

    facility = SysLogHandler.LOG_DAEMON
    syslog_handler = SysLogHandler(address=address, facility=facility)
    log.addHandler(syslog_handler)

    if log_level == logging.INFO:
        log.info("Verbosity level set to INFO")
    elif log_level == logging.DEBUG:
        log.debug("Verbosity level set to DEBUG")

    return (log, log_level)