Errors and Diagnostics
Logging
LensKit algorithms and evaluation routines report diagnostic data using the standard Python
logging framework. Loggers are named after the corresponding Python module, and all
live under the lenskit namespace.
Algorithms usually report erroneous or anomalous conditions using Python exceptions and
warnings. Evaluation code, such as that in lenskit.batch, typically reports
such conditions using the logger, as the common use case is to be running them in a script.
Warnings
In addition to Python standard warning types such as warnings.DeprecationWarning,
LensKit uses the following warning classes to report anomalous problems in
use of LensKit.
- class lenskit.DataWarning
Bases:
UserWarningWarning raised for detectable problems with input data.
- class lenskit.ConfigWarning
Bases:
UserWarningWarning raised for detectable problems with algorithm configurations.