logging

Anatomy

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Critical Data Structures

• Logger

  logging channel

• Manager

  There is just one instance, which holds the hierarchy of loggers

• Handler

  dispatch logging events to specific destination

Global States

root = RootLogger(WARNING)
Logger.root = root
Logger.manager = Manager(Logger.root)


def getLogger(name=None):
    """
    Return a logger with the specified name, creating it if necessary.

    If no name is specified, return the root logger.
    """
    if name:
        return Logger.manager.getLogger(name)
    else:
        return root