Python skills to master
Be comfortable with strings, lists, tuples, dictionaries, sets, comprehensions, functions, classes, exceptions, and standard-library collections.
Write interview-ready Python
Prefer clear code, use built-in structures appropriately, and understand the cost of common operations.
- Use dictionaries and sets for lookup
- Use deque for efficient queues
- Use heapq for priority queues
- Avoid hidden quadratic operations
Practice beyond syntax
Syntax is only the starting point. Solve problems that require pattern recognition, edge-case handling, and explaining runtime and memory.