How to Disable Logging

How to disable logging on the standard error stream?

I found a solution for this:

logger = logging.getLogger('my-logger')
logger.propagate = False
# now if you use logger it will not log to console.

This will prevent logging from being send to the upper logger that includes the console logging.

How to turn off debug log messages in spring boot

In application.properties you can add ‘logging.level.*=LEVEL’ where ‘LEVEL’ is one of TRACE, DEBUG, INFO, WARN, ERROR, FATAL, OFF. * is responsible for package/class.

For example

logging.level.root=WARN
logging.level.org.springframework.web=DEBUG
logging.level.org.hibernate=ERROR

This means that root logger has WARN level.
org.springframework.web is on DEBUG level, but all hibernates files are logged only ERROR.

In your case you must set logging.level.root on one of level from INFO, WARN, ERROR,FATAL or OFF to turn off all logging.

See https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-logging.html#boot-features-custom-log-levels

Python Logging - Disable logging from imported modules

The problem is that calling getLogger without arguments returns the root logger so when you set the level to logging.DEBUG you are also setting the level for other modules that use that logger.

You can solve this by simply not using the root logger. To do this just pass a name as argument, for example the name of your module:

logger = logging.getLogger('my_module_name')
# as before

this will create a new logger and thus it wont inadvertently change logging level for other modules.

Obviously you have to use logger.debug instead of logging.debug since the latter is a convenience function that calls the debug method of the root logger.

This is mentioned in the Advanced Logging Tutorial. It also allows you to know which module triggered the log message in a simple way.

How to disable the logging of Uvicorn?

You could change log level for getting only needed messages, there are a bunch of possible options:

uvicorn main:app --log-level critical

disable logging for specific lines of code

I used following code in python 3.7 in python 3.6 we have send logging.ERROR to disable function.

import logging

logging.disable()
#your code
logging.disable(logging.DEBUG)

How to disable a particular module for logging

The logging module has no concept of module-level loggers, as every logger is just established in a hierarchy based on name. paramiko.transport will always exist as a child logger of the paramiko logger by name, not by any module association. Because of this, there isn't really a good way to disable logging by module itself, but you can effectively disable logging for that logger and all child loggers by doing something like logging.getLogger('paramiko').setLevel(logging.CRITICAL+1), since every log message should propagate with a logging level that will be lower than this value, it will cause any log message to drop out before reaching a handler attached to the root logger.

Another question was raised about disabling all logging and then selectively enabling logging where needed. To achieve something like this, the quickest method would be to exclude the addition of any handlers to the root logger, and then add handlers in a "bottom-up" fashion. The reason you would want to do this is because if you end up attaching a handler to a logger that is the child of a logger that the handler has already been attached to, you will get duplicate logging messages, which is definitely of note.