Test & Code - Python Testing & Development

An overview of the pytest flags that help with debugging. From Chapter 13, Debugging Test Failures, of Python Testing with pytest, 2nd edition.pytest includes quite a few command-line flags that are useful for debugging. We talk about thes flags in this episode.Flags for selecting which tests to run, in which order, and when to stop:-lf / --last-failed: Runs just the tests that failed last.-ff / --failed-failed: Runs all the tests, starting with the last failed.-x / --exitfirst: Stops the tests session afterEd: after?Author: yep the first failure.--maxfail=num: Stops the tests after num failures.-nf / --new-first: Runs all the tests, ordered by file modification time.--sw / --stepwise: Stops the tests at the first failure. Starts the tests at the last failure next time.--sw-skip / --stepwise-skip: Same as --sw, but skips the first failure.Flags to control pytest output:-v / --verbose Displays all the test names, passing or failing.--tb=[auto/long/short/line/native/no] Controls the traceback style.-l / --showl