def setup_default_logger(logfile=None, level=logging.DEBUG, formatter=None, maxBytes=<NUM_LIT:0>, backupCount=<NUM_LIT:0>, disableStderrLogger=False):
global logger<EOL>logger = setup_logger(name=LOGZERO_DEFAULT_LOGGER, logfile=logfile, level=level, formatter=formatter, disableStderrLogger=disableStderrLogger)<EOL>return logger<EOL>
Deprecated. Use `logzero.loglevel(..)`, `logzero.logfile(..)`, etc.

Globally reconfigures the default `logzero.logger` instance.

Usage:

.. code-block:: python

    from logzero import logger, setup_default_logger
    setup_default_logger(level=logging.WARN)
    logger.info("hello")  # this will not be displayed anymore because minimum loglevel was set to WARN

:arg string logfile: If set, also write logs to the specified filename.
:arg int level: Minimum `logging-level <https://docs.python.org/2/library/logging.html#logging-levels>`_ to display (default: `logging.DEBUG`).
:arg Formatter formatter: `Python logging Formatter object <https://docs.python.org/2/library/logging.html#formatter-objects>`_ (by default uses the internal LogFormatter).
:arg int maxBytes: Size of the logfile when rollover should occur. Defaults to 0, rollover never occurs.
:arg int backupCount: Number of backups to keep. Defaults to 0, rollover never occurs.
:arg bool disableStderrLogger: Should the default stderr logger be disabled. Defaults to False.