# Blockchain Ethereum Developer Brownie Guide

### 1\. Ethereum Brownie

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662834021248/t8UdnQn4Q.png)

[**ETH Brownie Explained - What is Brownie? " Moralis - The Ultimate Web3 Development Platform**  
*Do you want to know what Brownie is in the context of Ethereum, and how to use it with Moralis? If so, read on!*moralis.io](https://moralis.io/eth-brownie-explained-what-is-brownie/ "https://moralis.io/eth-brownie-explained-what-is-brownie/")[](https://moralis.io/eth-brownie-explained-what-is-brownie/)

### Brownie

Brownie is a Python-based development and testing framework for smart contracts targeting the [Ethereum Virtual Machine](https://solidity.readthedocs.io/en/v0.6.0/introduction-to-smart-contracts.html#the-ethereum-virtual-machine).

[**GitHub - eth-brownie/brownie: A Python-based development and testing framework for smart contracts…**  
*Brownie is a Python-based development and testing framework for smart contracts targeting the Ethereum Virtual Machine…*github.com](https://github.com/eth-brownie/brownie "https://github.com/eth-brownie/brownie")[](https://github.com/eth-brownie/brownie)

### Features

*   Full support for [Solidity](https://github.com/ethereum/solidity) and [Vyper](https://github.com/vyperlang/vyper)
*   Contract testing via [pytest](https://github.com/pytest-dev/pytest), including trace-based coverage evaluation
*   Property-based and stateful testing via [hypothesis](https://github.com/HypothesisWorks/hypothesis/tree/master/hypothesis-python)
*   Powerful debugging tools, including python-style tracebacks and custom error strings
*   Built-in console for quick project interaction
*   Support for [ethPM](https://www.ethpm.com/) packages

**Install**

[**Installing Brownie - Brownie 1.17.2 documentation**  
*The recommended way to install Brownie is via pipx. Pipx is a tool to help you install and run end-user applications…*eth-brownie.readthedocs.io](https://eth-brownie.readthedocs.io/en/stable/install.html "https://eth-brownie.readthedocs.io/en/stable/install.html")[](https://eth-brownie.readthedocs.io/en/stable/install.html)

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

pipx install eth-brownie

$ brownie  
Brownie - Python development framework for Ethereum  
  
Usage:  brownie <command> \[<args>...\] \[options <args>\]

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662834022731/U3D_j4bnm.png)

brownie networks list

Ethereum  
 ├─Mainnet (Infura): mainnet  
 ├─Ropsten (Infura): ropsten  
 ├─Rinkeby (Infura): rinkeby  
 ├─Goerli (Infura): goerli  
 └─Kovan (Infura): kovan

Ethereum Classic  
 ├─Mainnet: etc  
 └─Kotti: kotti

Arbitrum  
 └─Mainnet: arbitrum-main

Avalanche  
 ├─Mainnet: avax-main  
 └─Testnet: avax-test

Binance Smart Chain  
 ├─Testnet: bsc-test  
 └─Mainnet: bsc-main

Fantom Opera  
 ├─Testnet: ftm-test  
 └─Mainnet: ftm-main

Harmony  
 └─Mainnet (Shard 0): harmony-main

Polygon  
 ├─Mainnet (Infura): polygon-main  
 └─Mumbai Testnet (Infura): polygon-test

XDai  
 ├─Mainnet: xdai-main  
 └─Testnet: xdai-test

Development  
 ├─Ganache-CLI: development  
 ├─Geth Dev: geth-dev  
 ├─Hardhat: hardhat  
 ├─Hardhat (Mainnet Fork): hardhat-fork  
 ├─Ganache-CLI (Mainnet Fork): mainnet-fork  
 ├─Ganache-CLI (BSC-Mainnet Fork): bsc-main-fork  
 ├─Ganache-CLI (FTM-Mainnet Fork): ftm-main-fork  
 ├─Ganache-CLI (Polygon-Mainnet Fork): polygon-main-fork  
 ├─Ganache-CLI (XDai-Mainnet Fork): xdai-main-fork  
 └─Ganache-CLI (Avax-Mainnet Fork): avax-main-fork

❯ brownie pm install OpenZeppelin/openzeppelin-contracts@4.0.0  
Brownie v1.17.2 — Python development framework for Ethereum

1.  47MiB \[00:02, 552kiB/s\]  
    Downloading from [https://solc-bin.ethereum.org/linux-amd64/solc-linux-amd64-v0.8.10+commit.fc410830](https://solc-bin.ethereum.org/linux-amd64/solc-linux-amd64-v0.8.10+commit.fc410830)

### TokenERC20.sol

1.  brownie init
2.  pip install eth-brownie
3.  [https://eips.ethereum.org/EIPS/eip-20](https://eips.ethereum.org/EIPS/eip-20)
4.  Create /contract/TokenERC20.sol
5.  brownie compile
6.  ganache-cli
7.  Create /scripts/1\_deploy\_token.py
8.  brownie run scripts/1\_deploy\_token.py

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662834024154/xYIScMTkX.png)

### EasyToken.sol

Open Zeppeling Git Hub ERC20

[**ERC20 - OpenZeppelin Docs**  
*Often, you'll want to be able to divide your tokens into arbitrary amounts: say, if you own 5 GLD, you may want to send…*docs.openzeppelin.com](https://docs.openzeppelin.com/contracts/3.x/erc20 "https://docs.openzeppelin.com/contracts/3.x/erc20")[](https://docs.openzeppelin.com/contracts/3.x/erc20)

// contracts/GLDToken.sol // SPDX-License-Identifier: MIT   
pragma solidity ^0.6.0;   
 import "@openzeppelin/contracts/token/ERC20/ERC20.sol";   
 contract GLDToken is ERC20 {      
 constructor(uint256 initialSupply) public ERC20("Gold", "GLD") {         \_mint(msg.sender, initialSupply);     } }

1.  brownie compile
2.  brownie-config.yaml
3.  brownie compile
4.  brownie run scripts/2\_deploy\_ez\_token.py
5.  brownie run scripts/1\_deploy\_token.py — network rinkeby

### ERC20 Standard

### — -

### React Wallet App

[**React App**  
*Edit description*egf9m.csb.app](https://egf9m.csb.app/ "https://egf9m.csb.app/")[](https://egf9m.csb.app/)

Github Code

[**GitHub - abdulmalik97/moralis-react-authentication**  
*This project was bootstrapped with Create React App. In the project directory, you can run: Runs the app in the…*github.com](https://github.com/abdulmalik97/moralis-react-authentication "https://github.com/abdulmalik97/moralis-react-authentication")[](https://github.com/abdulmalik97/moralis-react-authentication)