Backward Compatibility

structlog has a very strong backward compatibility policy that is inspired by the one of the Twisted framework.

Put simply, you shouldn’t ever be afraid to upgrade structlog if you’re using its public APIs. If there will ever be need to break compatibility, it will be announced in the Changelog and raise deprecation warning for a year before it’s finally really broken.


You cannot however rely on the default settings and the module. They may be adjusted in the future to provide a better experience when starting to use structlog. So please make sure to always properly configure your applications.