🚧 Module 08: Error Handling

Error handling is the skill of writing programs that fail safely, communicate clearly, and recover when possible. This module teaches how to use exceptions, write defensive checks, create custom errors, and log failures for real-world debugging.

Estimated Time: 6-8 hours
Prerequisites: Module 01 (Foundations)
Level: ⭐⭐⭐ Upper-Intermediate

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📚 Topics Covered

#	Topic	Description	Key Concepts
01	Exceptions	What exceptions are and why they exist	raise, built-in errors, stack trace
02	Try/Except/Finally	Catching, handling, and cleaning up	try, except, else, finally
03	Custom Exceptions	Defining your own error types	subclasses, hierarchy, messages
04	Defensive Programming	Preventing errors before they happen	validation, guards, assertions
05	Logging	Recording errors and context	logging levels, handlers, tracebacks

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🎯 Learning Goals

By the end of this module, you should be able to:

• Explain what exceptions are and how they propagate.
• Use try/except/else/finally to handle failures safely.
• Create custom exceptions to make errors meaningful.
• Apply defensive checks to avoid fragile code paths.
• Log errors with enough context to debug real issues.

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📂 Module Structure

08_error_handling/
├── README.md
├── 01_exceptions/
│   ├── README.md
│   ├── examples.py
│   ├── exercises.py
│   └── quiz.md
├── 02_try_except_finally/
│   ├── README.md
│   ├── examples.py
│   ├── exercises.py
│   └── quiz.md
├── 03_custom_exceptions/
│   ├── README.md
│   ├── examples.py
│   ├── exercises.py
│   └── quiz.md
├── 04_defensive_programming/
│   ├── README.md
│   ├── examples.py
│   ├── exercises.py
│   └── quiz.md
└── 05_logging/
    ├── README.md
    ├── examples.py
    ├── exercises.py
    └── quiz.md

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Ready to start? Begin with 01_exceptions!