logs.py 文件源码

def reopen_log_files():
    """
    Function to iterate over all FileHandlers in the logger hierarchy, close
    their streams and reopen them.
    """
    # Get the manager of the root logger
    root = logging.getLogger()
    manager = root.manager
    mylog = logging.getLogger('nav.logs')
    for logger in [root] + manager.loggerDict.values():
        try:
            for hdl in logger.handlers:
                if isinstance(hdl, logging.FileHandler):
                    mylog.debug("Reopening " + hdl.baseFilename)
                    hdl.flush()
                    hdl.acquire()
                    hdl.stream.close()
                    hdl.stream = open(hdl.baseFilename, hdl.mode)
                    hdl.release()
                    mylog.debug("Reopened " + hdl.baseFilename)
        except AttributeError:
            continue