Python 日志记录到多个文件

Question

有没有人能给个例子，教我怎么在Python中同时记录到两个或更多不同的日志文件？

我想把日志记录到比如说'/tmp/foo.log'和'/tmp/bar.log'这两个文件里。

Answer 1

这里有一个完整的示例，基于logging.html中的例子。需要注意的一个关键点是，你必须确保为根日志记录器设置正确的日志级别，这样才能与文件正常互动。

import logging

logging.getLogger('').setLevel(logging.DEBUG)
def create_log_file(filename, level=logging.INFO):
    handler = logging.FileHandler(filename)
    handler.setLevel(level)
    formatter = logging.Formatter('%(asctime)s %(name)-12s %(levelname)-8s %(message)s')
    handler.setFormatter(formatter)
    logging.getLogger('').addHandler(handler)

create_log_file('/temp/log1.log', logging.DEBUG)
create_log_file('/temp/log2.log', logging.INFO)

# Now, we can log to the root logger, or any other logger. First the root...
logging.info('Jackdaws love my big sphinx of quartz.')

# Now, define a couple of other loggers which might represent areas in your
# application:

logger1 = logging.getLogger('myapp.area1')
logger2 = logging.getLogger('myapp.area2')

logger1.debug('Quick zephyrs blow, vexing daft Jim.')
logger1.info('How quickly daft jumping zebras vex.')
logger2.warning('Jail zesty vixen who grabbed pay from quack.')
logger2.error('The five boxing wizards jump quickly.')

Answer 2

这里有一个例子：

import logging
logger1 = logging.getLogger('1')
logger1.addHandler(logging.FileHandler('/tmp/logger1'))
logger2 = logging.getLogger('2')
logger2.addHandler(logging.FileHandler('/tmp/logger2'))

logger1.error('1')
logger2.error('2')

然后，

 $ cat /tmp/logger1
 1
 $ cat /tmp/logger2
 2

Python 日志记录到多个文件

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