Unit 3: Ethereum | Local Development Environments -English Version- 🚀

Local Enviroment | Brownie

About Brownie

• Python-Based
• Build on Web3.py
• Pre-Configured Networks (Eth with Infura)
• Full support Solidity and Vyper

Requirements and Setup

Requirements:

• python3 version 3.6 or greater, python3-dev
• ganache-cli - tested with version 6.12.2

Setting up the local enviroment as describe on github eth-brownie/brownie, to see the Official Brownie Documentation Eth-Brownie Docs

If you don't have Ganache, Run:

npm install ganache --global

Using PIPX (Recomended)

python3 -m pip install --user pipx
python3 -m pipx ensurepath

python3 -m pip install --user pipx

pipx install eth-brownie

It might be python instead of python3 depending on your configuration

If you have problems you might want to check pipx documentation

Quick Start

brownie init

Note: It must be initalized in an empty folder.

./contracts

Using the previos contract developed Voting.sol

./scripts

Writing a deployment script

brownie-config.yaml

Configuration file for the project

.env (changing example.env)

You will need to set:

• PRIVATE_KEY (account of deployer)
• WEB3_INFURA_PROJECT_ID (Provider) if you want to see all the networks already configured then run:

brownie networks list

• ETHERSCAN_TOKEN (If you want to verify the smart contract)

Smart contract deployed on kovan testnet at: 0x947D0f6E593e30e0eE27f8D4BB6d4805fd1964e6