Disable output of root logger

Question

I have the following code in a file called 'logger.py' ``` import logging format = '%(asctime)s - %(name)-30s - %(levelname)-8s - %(message)s' logging.basicConfig(level=logging.DEBUG, format=format) formatter = logging.Formatter(format) fh = logging.FileHandler('test.log') fh.setFormatter(formatter) fh.setLevel(logging.DEBUG) ch = logging.StreamHandler() ch.setFormatter(formatter) ch.setLevel(logging.INFO) logging.getLogger().addHandler(fh) logging.getLogger().addHandler(ch) ``` and in another file ``` import logging import logger logger = logging.getLogger(__name__) logger.info('Staring Scheduler') ``` and I am getting the following console output ``` 2014-07-14 22:27:10,915 - __main__ - INFO - Staring Scheduler 2014-07-14 22:27:10,915 - __main__ - INFO - Staring Scheduler ``` I am unable to disable the double output. I would like to use the extra streamhandler to customize the log level printed to the console. In the future I would also like to use the RotatingFileHandler instead of…

Accepted Answer

The reason you are seeing the double output is because you have set up two StreamHandlers in your first file; logger.py

One explicitly in this line:

```
ch = logging.StreamHandler()
```

the other in this line:

```
logging.basicConfig(level=logging.DEBUG,
```

According to the docs for logging.basicConfig:

Does basic configuration for the logging system by creating a StreamHandler with a default Formatter and adding it to the root logger.

So you should remove the basicConfig line.

However after you remove it you will need to set the level for the root logger to DEBUG, since you do this in the basicConfig line:

```
logging.getLogger().setLevel(logging.DEBUG)
```

Disable output of root logger

Solution

Problem