Module 15
Exception Handling
Learn how to handle runtime errors and create custom exceptions.
01
Exception Handling Overview — Build Robust Python Applications
Learn why exception handling exists — convert runtime errors and tracebacks into user-friendly messages and keep apps running gracefully.
02
Types of Errors in Python — Compile, Logical, and Runtime
Identify compile-time, logical, and runtime errors in Python — and learn why only runtime errors are handled with try and except.
03
Built-in Exceptions in Python — ValueError, TypeError, and More
Master the most common Python exception classes — when each is raised, how PVM creates exception objects, and how to catch specific types.
04
try and except Basics — Syntax for Handling Exceptions
Learn the try and except syntax — monitor risky code, catch runtime exceptions, and keep Python programs running gracefully.
05
else and finally Blocks — Results and Cleanup in Python
Learn when else runs after successful try execution and why finally is the cleanup block that always executes in Python.
06
Forms of except Blocks — Multi-Exception, Alias, and Default
Learn all six forms of except blocks in Python — single handlers, tuple grouping, alias, bare except, and enterprise Exception fallback patterns.
07
Custom Exceptions and raise — Project-Specific Error Classes
Create custom exception classes inheriting Exception, trigger them with raise, and enforce business rules like invalid PINs, login failures, and insufficient balance.