Build a RAG Pipeline From Scratch Without a Framework

📰 Dev.to · Multigrid

Learn to build a RAG pipeline from scratch using only the Python standard library in 200 lines of code

intermediate Published 7 Aug 2026
Action Steps
  1. Parse input data using Python's built-in string manipulation functions
  2. Chunk the parsed data into smaller, manageable pieces
  3. Embed the chunked data using techniques such as word embeddings
  4. Retrieve relevant information from the embedded data
  5. Answer questions based on the retrieved information using simple inference techniques
Who Needs to Know This

Data scientists and machine learning engineers can benefit from understanding how to build a RAG pipeline without relying on external frameworks, allowing for more flexibility and customization in their projects

Key Insight

💡 You can build a basic RAG pipeline using only the Python standard library, without relying on external frameworks or databases

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🚀 Build a RAG pipeline from scratch in 200 lines of Python! 🤯 No frameworks needed! 💻

Key Takeaways

Learn to build a RAG pipeline from scratch using only the Python standard library in 200 lines of code

Full Article

Parse, chunk, embed, retrieve and answer in about 200 lines of Python standard library — no vector database, no orchestration framework.
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