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Module 7
Flatten Your Code: Control Flow Without the Nesting Hell
1
Flattening Conditionals with Guard Clauses
Apply guard clauses and early returns to flatten nested conditional logic and improve readability.
2
Robust Error Handling with `try/except/else/finally`
Use the `try/except/else/finally` structure for robust error-control flow.
3
`for/else` For Search and Fallback
Apply the `for/else` construct for search-and-fallback patterns where the `else` block runs only if the loop completes without a `break`.
4
Using Context Managers for Resource Cleanup
Use the `with` statement with built-in and library context managers for safe and automatic resource cleanup.
5
Creating Context Managers with `@contextlib.contextmanager`
Write a custom context manager using the `@contextlib.contextmanager` decorator and a generator.
6
Flexible Exception Handling and Context Management with `contextlib`
Use `contextlib.suppress` to cleanly ignore specific exceptions and `contextlib.ExitStack` to manage a dynamic number of contexts.
7
Strategy Pattern for Conditional Logic
Replace long `if/elif/else` chains with a dictionary-of-callables strategy pattern for extensibility and testability.
8
State Machine with Coroutine `send()`
Model a simple state machine using a generator coroutine that accepts values via its `.send()` method.
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Design Elegant Functions: Closures, Decorators, and APIs
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Handle the Real World: Files, Paths, and I/O