A15PythonBeginnerAbout 120 min to complete
Error Handling
Pipelines that survive bad input, fail loudly when they should, and tell you exactly what went wrong — the last piece of Section 1.
Notebook
About 120 minutes to complete
Enrol to read the notebook and download it to run.
What this module covers
Pipelines that survive bad input, fail loudly when they should, and tell you exactly what went wrong — the last piece of Section 1.
By the end of it
- Read a traceback and locate the actual cause quickly
- Explain the exception hierarchy and catch at the right level of specificity
- Use all four clauses — try, except, else, finally — and say what each is for
- Justify why a bare except: is almost always a bug
- Raise exceptions deliberately, and chain them with raise ... from to preserve context
- Define custom exception types for your own domain errors
- Choose between EAFP and LBYL styles appropriately
- Decide when to catch an error, when to re-raise, and when to let it crash