Hello folks! Flask is simple but has its own set of concepts — blueprints, contexts, decorators, extensions. Having a clear mental model of how it all fits together saves hours of documentation diving. In this post we give you a complete Flask summary covering the essential patterns and concepts. Your Flask reference, all in one … Read more
Hey folks! Flask routes work great until they don’t — and without unit tests, you only find out when a user reports a bug. Testing Flask apps with pytest lets you verify your endpoints behave correctly before anything goes to production. In this post we set up unit tests for a Flask application and cover … Read more
Hello everyone! You deployed a smart contract and now you want to interact with it from a web app without building a full backend. Web3.js lets your frontend communicate directly with the blockchain. In this post we build a simple web3 app that reads from and writes to a deployed smart contract on Sepolia. Decentralized … Read more
Hi folks! Before you can interact with any Ethereum testnet, you need test tokens — but getting them isn’t always obvious. In this post we walk through how to get Sepolia test tokens so you can deploy and test smart contracts without spending real money. Free ETH, for science! https://faucets.chain.link/sepolia
Hi there! CSV files are everywhere — data exports, reports, spreadsheets shared by email. Python makes reading and writing CSV files surprisingly clean with the built-in csv module. In this post we cover how to read, process, and write CSV files in Python with practical examples. Because data always ends up in a spreadsheet at … Read more