Start here in Python
The most useful guides in this topic, not just the most recent.
Python Guides & Tutorials
Learn Python the right way — syntax, data structures, OOP, libraries, APIs and project ideas that build a hire-ready portfolio.
Python articles
Flask vs FastAPI vs Django: Which to Choose in 2026
Flask, FastAPI and Django compared on what actually differs: what each includes out of the box, how validation, async and data access work, the same small endpoint written in all three, and which one fits a content site, a JSON API, an ML service or an internal tool.
Lambda Functions, map, filter and reduce in Python
Lambda, map, filter and reduce explained by what they are good for: key functions for sorting and max, map and filter as lazy one-shot iterators, why reduce is usually replaced by a built-in, the operator module, and the loop-variable trap that makes every lambda return the same value.
Multithreading vs Multiprocessing in Python
Threads or processes? A timed experiment with concurrent.futures shows the rule the global interpreter lock creates: threads help while programs wait, processes help while they compute. Then the costs of each, shared state and locks, the Windows and macOS start-up rule, and a decision table that includes asyncio.
Pandas Performance: Making Your Code 10x Faster
Where pandas code loses its time and the fixes that recover it, each timed on 200,000 rows: replacing iterrows and row-wise apply with column arithmetic, np.select for if-else logic, built-in groupby aggregations instead of lambdas, category columns for memory, and loading only what you need.
Python *args and **kwargs Explained Clearly
What *args and **kwargs really are: a tuple and a dictionary that collect extra arguments, and the same symbols unpacking values when you call a function. With the full parameter order, positional-only and keyword-only markers, forwarding arguments through wrappers, and the silent typo that **kwargs can swallow.
Python Mini Projects to Build in a Weekend
Weekend projects fail when they are too big to finish by Sunday night. The fix is scoping: a core you can build on Saturday and improvements for Sunday. Three mini projects are scoped that way here, a weather and bike-rental explorer, a safe file organiser and a habit tracker, with each Saturday core built and run.