Chapter 6
Dictionaries & Sets
4 topics in 3 parts
Key ideas
| Pattern / Feature | Idiomatic Pythonic Approach | Sub-optimal Anti-pattern |
|---|---|---|
| Data Processing | Comprehensions & Generators (Memory efficient) | Manual loops with repeated append calls |
| Resource Handling | Context Managers (with statement) | Manual open() and close() calls |
| Type Annotations | Type hinting via typing module | Unannotated dynamic parameters |
| Dictionary Lookups | dict.get(key, default) or defaultdict | Key check followed by indexed access |
All 4 topics in Dictionaries & Sets
Dictionaries
- Dictionaries & Key Lookups
- Dictionary Methods
Comprehensions
- Dictionary Comprehensions
Sets
- Sets & Mathematical Operations