Logging

Note: This documentation is based on Kedro 0.16.4, if you spot anything that is incorrect then please create an issue or pull request.

Kedro uses, and facilitates the use of Python’s logging library, by providing a default logging configuration. This can be found in conf/base/logging.yml in every project generated using Kedro’s CLI kedro new command.

Configure logging

You can configure the logging by simply instantiating ProjectContext class at the entry point of your application (e.g., src/<package_name>/run.py). Logging can be easily customised by overriding _setup_logging() in ProjectContext class as follow:

class ProjectContext(KedroContext):

    # ...

    def _setup_logging(self) -> None:
        # Custom logging configuration here
        pass

The configuration should comply with the guidelines from the logging library. Find more about it here.

Use logging

After configuring the logging using the example above, kedro will start emitting the logs automatically. To log your own code, you are advised to do the following:

import logging
log = logging.getLogger(__name__)
log.warning("Issue warning")
log.info("Send information")

Logging for anyconfig

By default, anyconfig library that is used by kedro to read configuration files emits a log message with INFO level on every read. To reduce the amount of logs being sent for CLI calls, default project logging configuration in conf/base/logging.yml sets the level for anyconfig logger to WARNING.

If you would like INFO level messages to propagate, you can update anyconfig logger level in conf/base/logging.yml as follows:

loggers:
    anyconfig:
        level: INFO  # change
        handlers: [console, info_file_handler, error_file_handler]
        propagate: no