01Module 06 - Error Handling and Defensive EngineeringMaster Python error handling as a professional engineering discipline - exceptions, try/except/finally, custom exceptions, logging, debugging, and defensive programming patterns used in production systems.02Exceptions Explained - Python's Error Handling ModelUnderstand Python exceptions at engineering depth - what an exception object is, how the call stack unwinds, exception chaining, the BaseException vs Exception split, and how to read production tracebacks from Django and FastAPI.03↳ Practice: Exceptions Explained<PracticePageHeader04try / except / else / finally - Python's Exception Handling SyntaxMaster all four clauses of Python's exception handling syntax at engineering depth - execution order, the often-missed else clause, finally guarantees, EAFP vs LBYL patterns, and real-world retry and resource cleanup logic.05↳ Practice: try-except-finally<PracticePageHeader06Exception Hierarchy - Python's Built-in Exception TreeMaster Python's complete built-in exception hierarchy - from BaseException at the root to StopIteration driving for loops, understand which exceptions to catch, when catching a parent catches all children, and how to pick the right exception to raise.07↳ Practice: Exception HierarchySolve 11 Python exception hierarchy problems. Covers BaseException vs, isinstance exception, catching parent. Hints and solutions.08Raising Exceptions - When and How to Signal ErrorsMaster the art of raising exceptions in Python - when to raise vs return, how to write good error messages, exception chaining, guard clauses, and how to design exception behavior for library code vs application code.09↳ Practice: Raising ExceptionsSolve 11 Python raising exceptions problems. Covers raise exception, raise from, bare raise, guard clause. Hints and solutions.10Custom Exceptions - Designing Your Exception HierarchyLearn to design domain-specific exception hierarchies in Python - from minimal custom exceptions to rich context-carrying error objects, exception chaining, mixin patterns, and real-world library design.11↳ Practice: Custom ExceptionsSolve 11 Python custom exceptions problems. Covers exception hierarchy, exception attributes, raise from. Hints and solutions.12Assertions and Invariants - Encoding Correctness in CodeLearn how Python's assert statement works at runtime and under optimization, how to use assertions to document and enforce invariants, and when assertions are the right tool versus when they are the wrong one.13↳ Practice: Assertions and InvariantsSolve 11 Python assertions and invariants problems. Covers assert practice, assertions exercises. Hints and solutions.14Defensive Programming - Writing Code That Fails GracefullyLearn defensive programming techniques for Python - guard clauses, fail-fast principles, input validation at boundaries, defensive copying, safe defaults, and patterns like null object and circuit breaker for production-grade resilience.15↳ Practice: Defensive ProgrammingSolve 11 Python defensive programming problems. Covers input validation, LBYL EAFP, guard clauses. Hints and solutions.16Logging Basics - Structured Observability for Python ApplicationsMaster Python's logging module at engineering depth - the logger hierarchy, handlers, formatters, propagation rules, structured JSON logging, and how to configure logging correctly for production FastAPI and Django applications.17↳ Practice: Logging BasicsSolve 11 Python logging basics problems. Covers logging practice, logging exercises, logging module. Hints and solutions.18Debugging Strategies - Systematic Approaches to Finding BugsMaster Python debugging at engineering depth - reading tracebacks, using pdb and breakpoint(), post-mortem debugging, the traceback module, profiling tools, and the systematic mental models that separate expert debuggers from beginners.19↳ Practice: Debugging StrategiesSolve 11 Python debugging strategies problems. Covers debugging practice, pdb exercises, breakpoint practice. Hints and solutions.20Common Error Anti-Patterns - Mistakes That Fail Silently in ProductionMaster the 10 most dangerous Python error-handling anti-patterns - swallowed exceptions, broad catches, lost context, resource leaks, mutable defaults, and more. Each anti-pattern shown with bad code, root cause, and the correct fix.21↳ Practice: Error Anti-PatternsSolve 11 Python common error anti-patterns problems. Covers bare except, swallowing exceptions, pokemon exception. Hints and solutions.22Module 6 - Projects4 lessons4 lessons
