Added an helper to patch logging to add getChild method on loggers

""" Logging helpers.

"""

import types

# This function is taken from logging package from Python stdlib v2.7.

def getChild(self, suffix):

    """

    Get a logger which is a descendant to this one.

    This is a convenience method, such that

    logging.getLogger('abc').getChild('def.ghi')

    is the same as

    logging.getLogger('abc.def.ghi')

    It's useful, for example, when the parent logger is named using

    __name__ rather than a literal string.

    """

    if self.root is not self:

        suffix = '.'.join((self.name, suffix))

    return self.manager.getLogger(suffix)

def patch_logging():

    import logging

    logging.Logger.getChild = types.UnboundMethodType(getChild, None, logging.Logger)