FastAPI Crash Course: Build a CRUD REST API in ~40 Lines of Python

📰 Dev.to · mihir mohapatra

Learn to build a CRUD REST API using FastAPI and Pydantic in under 40 lines of Python, leveraging automatic Swagger docs and request validation

intermediate Published 28 Jun 2026
Action Steps
  1. Install FastAPI and Pydantic using pip
  2. Define a Pydantic model for request validation
  3. Create a FastAPI app with CRUD endpoints
  4. Implement automatic Swagger documentation
  5. Test the API using a tool like curl or Postman
  6. Deploy the API to a cloud platform like AWS or Google Cloud
Who Needs to Know This

Backend engineers and developers benefit from this micro-lesson as it provides a concise guide to building a REST API, while also being relevant to full-stack developers and DevOps teams who need to integrate APIs into their workflow

Key Insight

💡 FastAPI and Pydantic can be used together to build a fully functional CRUD REST API with minimal boilerplate code

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🚀 Build a CRUD REST API in ~40 lines of Python with FastAPI and Pydantic! 💻

Key Takeaways

Learn to build a CRUD REST API using FastAPI and Pydantic in under 40 lines of Python, leveraging automatic Swagger docs and request validation

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