PythonAlchemist

Transforming complex Python concepts into simple, actionable knowledge. Master Python, AI/ML, and ace your coding interviews.

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AILLM

MCP Explained: The Universal Protocol for AI Tools

What is Model Context Protocol? Watch MCP client-server communication in action. Learn how this Anthropic standard connects LLMs to databases, APIs, and tools.

11 min read

AILLM

AI Agents Explained: From Chatbots to Autonomous Systems

How do AI agents work? Watch the Observe-Think-Act loop in action with our interactive visualizer. Understand ReAct, tool use, and autonomous decision-making.

10 min read

AILLM

RAG Explained: How AI Gets Real-Time Knowledge

What is RAG? Watch the retrieval-augmented generation pipeline step-by-step. See how LLMs access external knowledge through vector search and embeddings.

9 min read

System DesignDatabases

System Design Simulator: Build, Break, and Fix Databases

Interactive SimCity-style simulator where you build and break infrastructure. Add shards, replicas, and watch cascade failures teach you system design.

10 min read

AIMath

Tensors Explained: From Scalars to High-Dimensional Data

Understand tensors visually: scalar vs vector vs matrix vs tensor. Learn NumPy shape intuition with interactive examples and visualizations.

7 min read

LeetcodeRecursion

Why Recursion Burns Your CPU (And How Memoization Fixes It)

Visualize why naive recursion explodes exponentially. Watch memoization turn chaos into order with an interactive Fibonacci simulator.

9 min read

LeetcodeArrays

Sliding Window Algorithm: Why O(n²) is Just Bad Memory

Visualize why O(n²) is inefficient through a heat map simulator. Watch brute force burn CPU cycles while sliding window glides smoothly.

15 min read

Interactive Tools

Calculators and playgrounds for Python developers and ML engineers

Unix Timestamp Converter

Convert timestamps to dates

Current Unix TimeLive

—

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Tokenizer Playground

See how LLMs read text

“Hello, GPT!”6 tokens

Hello,▁GPT!

BPE tokenization splits text into subwords

Try it

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Latest Posts

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AILLM

Knowledge Distillation: Small Models, Big Brains

Learn how knowledge distillation trains small student models from large teachers. Tune temperature and watch soft labels in the interactive playground.

8 min read

AILLM

From Prompt Engineering to Context Engineering

Prompt engineering hit a ceiling. Context engineering - controlling what goes into the model, not just how you ask - is the real skill for 2026 AI.

7 min read

AILLM

LoRA Hyperparameters: The Tuning Guide

Learn how LoRA rank, alpha, and target modules control fine-tuning quality. Interactive playground lets you tune each parameter and see the impact live.

8 min read

AILLM

KV Cache: Why LLMs Remember, Not Recompute

Learn how the key-value cache makes LLM inference fast by remembering past attention computations. Interactive simulator shows the speedup token by token.

7 min read

AILLM

Flash Attention: Why Your GPU Is 90% Idle

Flash Attention fixes the memory bottleneck that wastes most of your GPU's power during attention. How tiling works and why every LLM uses it.

6 min read

AILLM

Quantization: Shrink Any LLM 4x in Minutes

Learn how quantization compresses LLMs from 140 GB to 35 GB with minimal accuracy loss. What it is, how it works, and when to use INT8 vs INT4.

7 min read