Abstract Algorithms

beginner

4 articles across 4 sub-topics

Functions in Python: Parameters, Return Values, and Scope

TLDR: Python functions are first-class objects, not just reusable blocks. They support keyword arguments, safe defaults with None, variadic *args/**kwargs, closures, and LEGB scope resolution. These five ideas are not advanced features — they are the...

Apr 19, 2026•23 min read

Exception Handling(1)

File I/O and Exception Handling in Python

📖 The Config File That Took Down a Friday Deployment Picture this: it's 5 PM on a Friday. A developer pushes a new service to production. The deployment succeeds, but five minutes later the service is dead — a cascade of AttributeError: 'NoneType' o...

Apr 19, 2026•21 min read

Data Structures(1)

Python Data Structures: Lists, Dicts, Sets, and Tuples

TLDR: Python's four built-in collections are not interchangeable — their internals are fundamentally different. list is a dynamic array: fast at the end, slow for membership. dict is a hash table: O(1) key lookup, insertion-order-preserving since Pyt...

Apr 19, 2026•26 min read

Control Flow(1)

Python Basics: Variables, Types, and Control Flow

TLDR: Python variables are labels that point at objects — not typed boxes. The type lives with the object, not the variable. Master truthiness, f-strings, for/while loops, and the handful of pitfalls that trip up every developer coming from Java or J...

Apr 19, 2026•20 min read