Seting up the Environment
First download python in my windows machine using the link below
The most important thing is to get the build tools necessary for the web3 library in my case i needed V++ 2019 build tools
Use the link bellow and scroll down to Tools for Visual Studio to get the online installer and install the needed version
https://visualstudio.microsoft.com/downloads/?q=build+tools
Get a metamask wallet for the test only and create an account and register down
the passphrase, Account adress, The private keys
in the metamask network section reveal the testnet because we will use rinkbey test for this purpose
Get some etherium for the test using youre metamasc wallet here:
https://www.youtube.com/watch?v=qsvwg-cC928
Create an account in https://infura.io/
Create a project and name it however you like Just dont forget to turn the rinkby network after the creation process.
and write down the Project_id and the Project secret and the first endpoint
If you dont like Infura you can use : https://t.co/Ky3JWP8GPZ
Install Visualstudio code in the link bellow
https://code.visualstudio.com/
Install some usefull extensions for solidity and python
Open a new project and start creatingthose files:
- .env
- brownie-config.yaml
You dont need to create a virtual environement just install pipx with administrator rules:
python -m pip install --user pipx
reopen powershell and continue
python -m pipx ensurepath
reopen powershell and install brownie
pipx install eth-brownie
reopen powershell again and init required files for brownie
brownie init
Now you have those new folders
- build
- contracts
- interfaces
- reports
- scripts
- tests
Environement variable
Add a required environement variable with the name
WEB3_INFURA_PROJECT_ID
most be equal to youre INFURA_ID in the project created
SimpleStorage.sol
The code for the SimpleStorage.sol is :
create the file under contracts folder
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.9.0;
contract SimpleStorage {
uint256 favoriteNumber;
// This is a comment!
struct People {
uint256 favoriteNumber;
string name;
}
People[] public people;
mapping(string => uint256) public nameToFavoriteNumber;
function store(uint256 _favoriteNumber) public {
favoriteNumber = _favoriteNumber;
}
function retrieve() public view returns (uint256){
return favoriteNumber;
}
function addPerson(string memory _name, uint256 _favoriteNumber) public {
people.push(People(_favoriteNumber, _name));
nameToFavoriteNumber[_name] = _favoriteNumber;
}
}
In the code above we just have a favoriteNumber variable that we can check with retrieve function and modify with the store functionand we can associate someone name with a favorite number with addPerson function
Deploy.py
the code of the deploy.pyshould be the same as:
create the file under scripts folder
#Security
from dotenv import load_dotenv
#Necessary
from brownie import accounts, config, SimpleStorage, network
def get_account():
if network.show_active() == "development":
return accounts.add(config["wallets"]["from_key"])
else:
return accounts.add(config["wallets"]["from_key_metama"])
def deploy_ss():
print("ACCOUNT =>",get_account())
ss= SimpleStorage.deploy({"from": get_account()})
trx = ss.store(7, {"from": get_account()})
trx.wait(1)
fav = ss.retrieve()
print("FAV NOW =>",fav)
def main():
deploy_ss()
In the code above we are deploying the smart contract in the blockchain and interacting with it by storing the number 7 in favoriteNumber and the checking it
.env/Private keys
Now we should fill the necessary keys, you can escape the first two variables because it only needed in a local interaction with Ganache
.env file
ACCOUNT="0xRandom3216547986549687"
PRIVAT_KEY="0xRandom3216547986549687"
INFURA_ID="654random65465"
INFURA_SEC="654random65465"
META_ADRESS="0x654random65465"
META_PRV="654random65465"
ENDPOINT_RINKBY="654random65465"
ENV_TYPE="INFURA"
Configs
In the file brownie-config.yaml load where .env file are abd what the variable name for the private key
dotenv: "../.env"
wallets:
from_key: ${PRIVAT_KEY}
from_key_metama: ${META_PRV}
Deploying/Interaction
You just need a final step is running :
brownie run scripts/deploy.py --network rinkeby
I hope everything fine
if so check you contract here :
https://rinkeby.etherscan.io/address/write_the_adress_of_the_contract
you can get the contract adress with the info given by youre brownie output
SimpleStorage deployed at: 0xsdfsdfrandomsdfsdf
for the needygreedy tutorialplease follow it here:
Top comments (2)
Can you send me a message
wa.me/p/3860131137425888/212644489846