Create Basic ERC20 token with Solidity, Brownie and Python
Demo
Check out Cornell Token on Rinnkeby network with Etherscan.
Installation
Install brownie with pipx
$ python3 -m pip install --user pipx
$ python3 -m pipx ensurepath
$ pipx install eth-brownie
# test installation
$ brownie
Install ganache-cli with npm
npm install -g ganache-cli
Create the Project
Initialize the project
$ mkdir cornell_token ; cd cornell_token
$ brownie init
Create token contract in ./contracts/CornellToken.sol
- inherit ERC20 implementation from OpenZeppelin to avoid re-inventing the wheel.
Add ./brownie-config.yaml
- create mapping
@openzeppelinto the github repo - add other config:
- dotenv
- private key of local dev
Add .env for the environment variables
- dotenv -> for private key stuff, as a safer way
Change the name of the Token (e.g. CornellToken)
Creat deploy script deploy_cornell_token.py
- define initial supply, token name, token sybol
Creat deploy script helper.py
- get account function
Deploy to local blockchain development environment
$ brownie run scripts/deploy_cornell_token.sol
Deploy to live network
in brownie-config.yaml, add:
networks:
rinkeby: active
in .env, add:
export WEB3_INFURA_PROJECT_ID=<YOUR INFURA PROJECT ID>
export PRIVATE_KEY=<YOUR PRIVATE KEY>
To have infura project id, you need to create an infura account and a new project. The id is the endpoint to the live network.
To access your private key, you can check out the metamask -> account details
run the same script with an extra --network option
$ brownie run scripts/deploy_cornell_token.sol --network rinkeby
then wait for a moment to see the address being active on the live network.
add this token to metamask
- Metamask -> assets -> import tokens
- grab the token contract address and add it into metamask.
ethanh6
