The tutorial provides a comprehensive guide on using Python to develop decentralized finance (DeFi) projects. It highlights the significance of DeFi as a pivotal advancement in blockchain and smart contracts, often referred to as "new fintech." While JavaScript dominates smart contract development, Python is preferred by quantitative analysts and fintech companies due to its excellent developer experience, strong AI and machine learning support, robust fintech toolkits, comprehensive analytics tools, and production reliability. The tutorial discusses tools like web3.py and Brownie, which facilitate the development of DeFi projects, and emphasizes the integration of Python with Chainlink, a leading oracle solution for bringing off-chain data to DeFi smart contracts. It provides step-by-step instructions for setting up the development environment, including installing necessary software and setting environment variables, and demonstrates deploying a smart contract on the Kovan test network. The guide also touches on testing smart contracts locally and on the test network, and encourages further exploration and development using Python's powerful libraries like Numpy and TensorFlow in conjunction with Chainlink for building innovative DeFi solutions.