Web3.py Deploy Simple Contract - Web3py Typing CST Test
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Web3.py Deploy Simple Contract — Web3py Code
Deploy a simple Solidity contract using Web3.py.
from web3 import Web3
from solcx import compile_source
w3 = Web3(Web3.HTTPProvider('http://127.0.0.1:8545'))
source_code = 'contract Simple { uint public x; function set(uint val) public { x = val; } }'
compiled = compile_source(source_code)
contract_interface = compiled['<stdin>:Simple']
Simple = w3.eth.contract(abi=contract_interface['abi'], bytecode=contract_interface['bin'])
tx_hash = Simple.constructor().transact({'from': w3.eth.accounts[0]})
tx_receipt = w3.eth.wait_for_transaction_receipt(tx_hash)
print('Contract deployed at:', tx_receipt.contractAddress)Web3py Language Guide
Web3.py is a Python library for interacting with the Ethereum blockchain. It allows developers to deploy, interact with, and query smart contracts, manage accounts, and handle blockchain transactions programmatically.
Primary Use Cases
- ▸Deploying and interacting with smart contracts
- ▸Reading blockchain data and logs
- ▸Automating DeFi and trading operations
- ▸NFT minting and marketplaces
- ▸Backend blockchain integrations in Python
Notable Features
- ▸Python-native interface to Ethereum nodes
- ▸Supports multiple Ethereum networks
- ▸Smart contract ABI interaction
- ▸Event listening and filtering
- ▸Transaction creation, signing, and sending
Origin & Creator
Web3.py was created by the Ethereum Foundation community in 2016 to provide a Pythonic interface to the Ethereum blockchain.
Industrial Note
Web3.py is preferred in Python-based projects, automated scripts, backend integrations, DeFi bots, and data analytics pipelines interacting with Ethereum.
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