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Flask’s minimalism is a feature, not a limitation, but it means you’re responsible for every architectural decision, from database connections to route organization. This reference covers the core patterns that come up when building Flask APIs in production, from environment setup to MongoDB integration. TL;DR: Set up a complete Flask API with routes, database connection … Read more

Django has many moving parts. This post is a reference for the patterns you use repeatedly: models, views, templates, the ORM, migrations, the admin panel, and DRF. TL;DR: A Django reference covering models, ORM queries, views, URLs, templates, migrations, admin, and Django REST Framework basics.Stack: Python, Django, Django REST FrameworkLevel: BeginnerReading time: ~15 min Install … Read more

Before deploying a smart contract to any network, you write it in Solidity, compile it with Hardhat, and test it locally. Hardhat gives you a local blockchain, a testing framework, and deployment scripts all in one package. TL;DR: Write, compile, and test a Solidity smart contract using Hardhat with a local blockchain network.Stack: Hardhat, Solidity, … Read more

Deploying to a testnet is cheap (and free). Deploying to BNB mainnet costs real BNB. Before going live, make sure your Hardhat config is pointing to the right network and your wallet is funded. TL;DR: Deploy a smart contract to BNB Chain mainnet using Hardhat, then verify it on BscScan.Stack: Hardhat, Solidity, BNB Chain, BscScan, … Read more

Django’s built-in test runner works, but pytest makes testing more powerful. Better error messages, parametrize for table-driven tests, and a larger plugin ecosystem for coverage, factories, and database handling. TL;DR: Set up pytest-django to run your Django test suite, add fixtures, use factories for test data, and get coverage reports.Stack: Python, Django, pytest, pytest-django, factory-boyLevel: … Read more

Your smart contract is deployed on Sepolia. The next step is a web UI that lets users interact with it through MetaMask: connecting wallets, reading contract state, and submitting transactions. TL;DR: Build a Web3 frontend that connects to MetaMask, reads from a deployed smart contract, and submits transactions on Sepolia.Stack: Web3.js, MetaMask, Solidity, Sepolia, ReactLevel: … Read more

Flask routes work until they stop working, usually at the worst possible time. Unit tests catch regressions before they reach production. Flask has a built-in test client that makes testing routes clean without spinning up a real server. TL;DR: Write unit tests for Flask applications using the built-in test client: test routes, request handling, and … Read more

You deployed a smart contract and want to read its state or call functions from a web app. Web3.js with MetaMask gives you a browser-based connection to any deployed contract using its ABI and address. TL;DR: Connect to a deployed smart contract on Sepolia from a browser using Web3.js and MetaMask.Stack: Web3.js, MetaMask, Solidity, Sepolia, … Read more

You need test ETH to deploy and interact with smart contracts on Sepolia. The process is straightforward once you know which faucet to use. TL;DR: Get Sepolia testnet tokens from the Chainlink faucet to deploy and test Ethereum smart contracts.Stack: Ethereum, Sepolia testnet, Chainlink faucetLevel: BeginnerReading time: ~2 min Go to https://faucets.chain.link/sepolia, connect your wallet, … Read more