In Python, we get both DEBUG and INFO messages when the level is set to DEBUG. And, we do not get DEBUG messages when level is set to INFO.
I want the exact opposite of this. I want only DEBUG messages when level is set to DEBUG. And both INFO and DEBUG messages when level is set to INFO.
All logs should be there in the console.
Any way to achieve this?
Write a custom Handler.
In the emit function, note record.levelname and print or don't print the record accordingly.
import logging
class MyHandler(logging.StreamHandler):
def emit(self, record):
if record.levelname=="DEBUG":
self.stream.write(msg)
self.stream.write(self.terminator)
self.flush()
Then use it in the usual way:
logger = logging.getLogger('spam_application')
logger.setLevel(logging.DEBUG)
# create file handler which logs even debug messages
fh = MyHandler()
fh.setLevel(logging.DEBUG)
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
fh.setFormatter(formatter)
logger.addHandler(fh)
This would log info logs to file and debug logs to console.
import logging
logging.basicConfig(filename='example.log',level=logging.Info)
logging.debug('This message should go to the log file')
logging.info('So should this')
logging.warning('And this, too')