logging in python

Question

i want to create separate logging file in python like info.log, debug.log, error.log i have a setting file(logging.conf) for logging as given below ``` [loggers] keys=root,simpleExample [handlers] keys=consoleHandler [formatters] keys=simpleFormatter [logger_root] level=DEBUG handlers=consoleHandler [logger_simpleExample] level=DEBUG handlers=consoleHandler qualname=simpleExample propagate=0 [handler_consoleHandler] class=StreamHandler level=DEBUG formatter=simpleFormatter args=(sys.stdout,) [formatter_simpleFormatter] format=%(asctime)s - %(name)s - %(levelname)s - %(message)s datefmt= ``` and i have created logging.py file as given below ``` import logging import logging.config logging.config.fileConfig('logging.conf') # create logger logger = logging.getLogger('simpleExample') # 'application' code logger.debug('debug message') logger.info('info message') logger.warn('warn message') logger.error('error message') logger.critical('critical message') ``` but when execute logging.py fil…

Accepted Answer

You need to config multiple handler to output different level log to different files. For example, you want to INFO level log to info.log, you can define a fileHandler with INFO filer

```
class MyFilter(logging.Filter):
    def filter(self, rec):
        return rec.levelno == logging.INFO

class MyHandler(logging.FileHandler):
    def __init__(self, *arg, **kw):
        logging.FileHandler.__init__(self, *arg, **kw)
        self.addFilter(MyFilter())
```

And add it to logging namespace:

```
logging.MyHandler = MyHandler
```

so you can use it in your config file:

```
[handlers]
keys=consoleHandler,onlyinfoHandler
[handler_onlyinfoHandler]
class=MyHandler
level=DEBUG
formatter=simpleFormatter
args=('info.log','w')
```

You can continue to add others or use level as handler args.

logging in python

Solution

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