本页面使用机器翻译自英语，可能包含错误或不清楚的语言。如需最准确的信息，请参阅英文原文。由于更新频繁，部分内容可能与英文原文有出入。请加入我们在 Crowdin 上的努力，帮助我们改进本页面的翻译。 (Crowdin translation page, Contributing guide)

智能合约详情

TxTypeSmartContractDeploy 向给定地址部署智能合约。该交易类型将进行以下更改。

从web3py_ext导入extend，将 web3 扩展为 kaia web3

从 eth_account、web3py_ext 和 cytoolz 中导入必要的实用程序

使用 kairos testnet 端点创建 Web3 实例

此外，您还可以将提供商 URL 从 kairos 更改为 quicknode 。

从私人密钥加载账户

创建一个TxType.TX_TYPE_FEE_DELEGATED_SMART_CONTRACT_DEPLOY类型的空事务。您可以使用 empty_tx 工具来获取已填写默认字段的 tx。

使用 merge 工具，将 from 和 data 等**附加字段合并到空 tx 中。

从要部署到区块链网络的 solidity 代码中设置编译字节码

使用 fill_transaction 为交易对象添加更多参数，如gas限制...

用用户的私人密钥签署值传输 tx

从已签署的 tx 中的签名中恢复签名人地址

在最后一笔原始交易上签署缴费人账户

从已签署的 tx 中的签名中恢复缴费人地址

您可以使用Account.decode_transaction工具对 RLP 编码的 tx 进行解码，如果您想让输出格式更漂亮，请使用to_pretty工具。

将tx发送到区块链。它将返回 tx 哈希值，用于等待接收

如果交易已在区块链中完成，wait_for_transaction_receipt 方法会返回交易收据。

fee_delegated_smart_contract_deploy_sign_recover.py


from web3py_ext import extend
from web3 import Web3
from eth_account import Account
from web3py_ext.transaction.transaction import (
    empty_tx,
    fill_transaction,
    TX_TYPE_FEE_DELEGATED_SMART_CONTRACT_DEPLOY
)
from web3py_ext.utils.klaytn_utils import to_pretty
from cytoolz import merge
w3 = Web3(Web3.HTTPProvider('https://public-en-kairos.node.kaia.io'))
def web3_fee_delegated_smart_contract_deploy_sign_recover():
    user = Account.from_key('0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8')
    fee_delegator = Account.from_key('0x9435261ed483b6efa3886d6ad9f64c12078a0e28d8d80715c773e16fc000cff4')
    smart_contract_deploy_tx = empty_tx(TX_TYPE_FEE_DELEGATED_SMART_CONTRACT_DEPLOY)
    smart_contract_deploy_tx = merge(smart_contract_deploy_tx, {
        'from' : user.address,
        'data' : '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',
    })
    smart_contract_deploy_tx = fill_transaction(smart_contract_deploy_tx, w3)
    # sign the kaia specific transaction type with web3py
    signed_tx = Account.sign_transaction(smart_contract_deploy_tx, user.key)
    print("\nraw transaction of signed tx:", signed_tx.rawTransaction.hex())
    recovered_tx = Account.recover_transaction(signed_tx.rawTransaction)
    print("\nrecovered sender address", recovered_tx)
    feepayer_signed_tx = Account.sign_transaction_as_feepayer(signed_tx.rawTransaction, fee_delegator.address, fee_delegator.key)
    print("\nraw transaction of feePayer signed tx:", feepayer_signed_tx.rawTransaction.hex())
    feepayer_recovered_tx = Account.recover_transaction_as_feepayer(feepayer_signed_tx.rawTransaction)
    print("recovered feepayer address:", feepayer_recovered_tx)
    decoded_tx = Account.decode_transaction(feepayer_signed_tx.rawTransaction)
    print("\ndecoded transaction:", to_pretty(decoded_tx))
    tx_hash = w3.eth.send_raw_transaction(feepayer_signed_tx.rawTransaction)
    tx_receipt = w3.eth.wait_for_transaction_receipt(tx_hash)
    print('tx hash: ', tx_hash, 'receipt: ', tx_receipt)
web3_fee_delegated_smart_contract_deploy_sign_recover()

output


❯ py fee_delegated_smart_contract_deploy_sign_recover.py
output