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PROJECT


Deploy a Smart Contract Using Brownie

In this project, we’ll write a smart contract in Solidity and deploy it using Brownie. We’ll demonstrate how to connect to a contract and then call its functions. We’ll also deploy the contract over the Goerli testnet to demonstrate the challenges of real blockchain deployment.

Deploy a Smart Contract Using Brownie

You will learn to:

Write smart contracts in Solidity.

Deploy smart contracts on a local network and the Goerli testnet using Brownie.

Access contract functions using Web3.py.

Build and sign transactions to execute functions.

Skills

Web 3.0 App Development

Blockchain Development

Blockchain Deployment

Prerequisites

Basic understanding of Solidity

Basic understanding of Python

Basic understanding of Web3.py

Technologies

Web3

Python

Brownie

Solidity

Blockchain

Project Description

Brownie is a framework commonly used for developing and testing smart contracts for the Ethereum Virtual Machine. It supports both Solidity and Vyper as smart contract languages, but we’ll use Solidity in this project.

Brownie is relatively comfortable for people who prefer Python over Truffle or Hardhat, which are JavaScript-based frameworks.

Before we get started with the project, we must have the following things:

  • An Ethereum wallet such as MetaMask.
  • Some Ether on the Sepolia testnet.
  • A Web3 backend and IaaSInfrastructure-as-a-Service provider such as an Infura account.

In the first part of the project, we’ll create a smart contract and deploy it on a local blockchain. We will write Python scripts that will interact with it. Later on, we’ll deploy the same contract on the Sepolia test network where other people can access our contract and try it out.

Project Tasks

1

Configure the Smart Contract

Task 0: Get Started

Task 1: Create a Smart Contract

Task 2: Compile the Contract

2

Deploy the Smart Contract

Task 3: Set Up a Local Blockchain

Task 4: Write a Deployment Script

3

Interact With the Deployed Contract

Task 5: Connect to the Contract

Task 6: Verify Contract Connection

Task 7: Call the Contract Functions

4

Deploy the Smart Contract on a Testnet

Task 8: Modify the Deployment Script

Task 9: Add a Custom Testnet and Deploy the Smart Contract

5

Interact With the Contract Deployed on Testnet

Task 10: Use the Console to Make Function Calls

Task 11: Use Scripts to Make Function Calls

Congratulations!