Exception Handling
8 Topics
1
Try-Except Blocks
Fundamental exception handling with try/except
Essential — tests understanding of Python error handling, exception hierarchy, and EAFP philosophy
2
Multiple Exceptions
Catching different exception types with specific handlers
Robust error handling — tests understanding of exception ordering, tuple syntax, and specificity
3
else and finally
Success blocks and guaranteed cleanup
Complete exception handling — tests understanding of the full try/except/else/finally flow
4
Raising Exceptions
Signaling errors with raise and re-raising
Error propagation — tests understanding of raise, re-raising, and when to use exceptions vs return codes
5
Custom Exceptions
Creating domain-specific exception classes
Exception design — tests understanding of exception hierarchy, custom error types, and best practices
6
Exception Chaining
Preserving exception context with raise from
Advanced error handling — tests understanding of __cause__, __context__, and exception wrapping
7
Context Managers
Resource management with the with statement
Pythonic resource handling — tests understanding of __enter__/__exit__, contextlib, and resource safety
8
Assert Statements
Debugging assertions and their limitations
Debugging techniques — tests understanding of when to use assert vs raise, and -O flag behavior