我目前正试图在我的Python记录器中正确对齐日志记录级别字段，以便输出如下：

[2011-10-14 13:47:51] [DEBUG] --- starting... (smtphandlers.py:96)

[2011-10-14 13:47:51] [INFO] --- first things first... (smtphandlers.py:97)

[2011-10-14 13:47:51] [WARNING] --- about to end... (smtphandlers.py:98)

[2011-10-14 13:47:51] [DEBUG] --- ending (smtphandlers.py:99)

看起来像：

[2011-10-14 13:47:51] [ DEBUG] --- starting... (smtphandlers.py:96)

[2011-10-14 13:47:51] [ INFO] --- first things first... (smtphandlers.py:97)

[2011-10-14 13:47:51] [ WARNING] --- about to end... (smtphandlers.py:98)

[2011-10-14 13:47:51] [ DEBUG] --- ending (smtphandlers.py:99)

第一个块的格式行是：

logging.Formatter("[%(asctime)s] [%(levelname)s] --- %(message)s (%(filename)s:%(lineno)s)", "%Y-%m-%d %H:%M:%S")

如果我知道最大级别长度是8(例如：CRITICAL)，那么我将右对齐8个空格。

我试图弄清楚如何实现这一目标。以下错误是因为＆＃34;％(levelname)s＆＃34;是超过8个字符(替换不会发生，直到以后)。如果我使用＆＃34; {0：＆gt; 20}＆＃34; .format＆＃34;％(levelname)s＆＃34;之类的东西，那么它可以工作，但这比我需要或想要的填充更多。< / p>logging.Formatter("[%(asctime)s] [" + "{0:>8}".format"%(levelname)s" + "] --- %(message)s (%(filename)s:%(lineno)s)", "%Y-%m-%d %H:%M:%S")

没有子类化Formatter，任何人都有办法实现这个目标吗？