使用 web3.py 进行合约交互
# 部署合约
import json | |
from web3 import Web3, HTTPProvider | |
private_key = [钱包私钥] | |
wallet = Web3.toChecksumAddress([钱包地址]) | |
w3 = Web3(HTTPProvider([链的RPC])) | |
abi = json.loads([合约的ABI]) | |
code = [合约的字节码] | |
newContract = w3.eth.contract(bytecode=code, abi=abi) | |
nonce = w3.eth.getTransactionCount(wallet) | |
gasPrice = w3.toWei('10', 'gwei') | |
gasLimit = 4000000 | |
tx = { | |
'nonce': nonce, | |
'gas': gasLimit, | |
'gasPrice': gasPrice, | |
'from': wallet, | |
'chainId': w3.eth.chainId | |
} | |
transaction = newContract.constructor().buildTransaction(tx) | |
signed_tx = w3.eth.account.sign_transaction(transaction, private_key) | |
tx_hash = w3.eth.sendRawTransaction(signed_tx.rawTransaction) | |
transaction_hash = w3.toHex(tx_hash) | |
tx_receipt = w3.eth.wait_for_transaction_receipt(transaction_hash) | |
print(tx_receipt.contractAddress) |
# 调用合约中的函数
import json | |
import time | |
from web3 import Web3, HTTPProvider | |
contract_address = [合约地址] | |
private_key = [钱包私钥] | |
wallet = Web3.toChecksumAddress([钱包地址]) | |
w3 = Web3(HTTPProvider([RPC])) | |
w3.eth.defaultAccount = wallet | |
abi = json.loads([合约的ABI]) | |
contract = w3.eth.contract(address=contract_address, abi=abi) | |
nonce = w3.eth.getTransactionCount(wallet) | |
gasPrice = w3.toWei('5', 'gwei') | |
gasLimit = 4000000 | |
tx = { | |
'nonce': nonce, | |
'gas': gasLimit, | |
'gasPrice': gasPrice, | |
'from': wallet, | |
'value': w3.toWei(0.01,'ether') | |
} | |
transaction = contract.functions.create().buildTransaction(tx) | |
signed_tx = w3.eth.account.sign_transaction(transaction, private_key) | |
tx_hash = w3.eth.sendRawTransaction(signed_tx.rawTransaction) | |
transaction_hash = w3.toHex(tx_hash) | |
tx_receipt = w3.eth.wait_for_transaction_receipt(transaction_hash) | |
print(transaction_hash) |
# 向某一个地址转账
import json | |
import time | |
from web3 import Web3, HTTPProvider | |
private_key = [钱包私钥] | |
wallet = Web3.toChecksumAddress([钱包地址]) | |
w3 = Web3(HTTPProvider([RPC])) | |
w3.eth.defaultAccount = wallet | |
to = Web3.toChecksumAddress([要转账的地址]) | |
nonce = w3.eth.get_transaction_count(wallet) | |
tx = { | |
'nonce': nonce, | |
'to': to, | |
'gas': 4000000, | |
'gasPrice': w3.toWei('30', 'gwei'), | |
'value': w3.toWei(0.01, 'ether'), | |
'chainId': w3.eth.chainId | |
} | |
# 签名交易 | |
signed_tx = w3.eth.account.sign_transaction(tx, private_key) | |
tx_hash = w3.eth.send_raw_transaction(signed_tx.rawTransaction) |
# 查询一个地址的 ETH
import json | |
import time | |
from web3 import Web3, HTTPProvider | |
w3 = Web3(HTTPProvider([RPC])) | |
print(w3.fromWei(w3.eth.getBalance([需要查询的地址]), 'Ether')) |
