logger.py 文件源码

def get(fname=None):
  """
  Returns a logger instance, with optional log file output.
  """
  global log
  if log is not None and fname is None:
    return log

    # fname = os.environ.get('LOGTO', None)
    # if fname is None:
    #     fname = default_fname
  else:
    log = Logger(fname)

    return log