According to the official Python guide, the standard Python log levels from lowest to highest are DEBUG, INFO, WARNING, ERROR, and CRITICAL. These log levels are used to denote the severity of a log message, with DEBUG being the lowest level and CRITICAL being the highest. Each log level includes all the lower levels, so a message at the WARNING level will also be logged at the INFO and DEBUG levels.

Meaningful test automation metrics are part of demonstrating business value. Test automation metrics provide a quantitative way to measure the success of the test automation process, helping to identify areas where it is working well and areas where it could be improved. These metrics can be used to demonstrate the value of test automation to stakeholders, such as by showing the cost savings and increased productivity it can provide. Common test automation metrics include test execution time, test coverage, defect detection rate, and the cost of maintaining test scripts.