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价值转移

TxTypeValueTransfer 用于用户发送 KAIA。

由于 kaia 提供了多种交易类型，使每种交易类型只服务于一个目的，因此 TxTypeValueTransfer 只限于将 KAIA 发送到外部拥有的账户（EOA）。

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

使用指定的 kairos 测试网 URL 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.FEE_DELEGATED_VALUE_TRANSFER类型的空交易。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，将附加字段（如from、to和value）合并到空 tx 中。

您可以使用 Web3.to_peb 工具来转换十进制数值。

使用 fill_transaction 为交易对象添加更多参数，如气体限制...

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

用缴费人的私人密钥签署价值转移 tx

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。

向区块链发送 tx。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。

txTypeFeeDelegatedValueTransferTransaction.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,
    TxType
)
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_value_transfer_sign_recover():
    user = Account.from_key('0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8')
    fee_delegator = Account.from_key('0x9435261ed483b6efa3886d6ad9f64c12078a0e28d8d80715c773e16fc000cff4')
    fee_delegated_value_transfer_tx = empty_tx(TxType.FEE_DELEGATED_VALUE_TRANSFER)
    fee_delegated_value_transfer_tx = merge(fee_delegated_value_transfer_tx, {
        'from' : user.address,
        'to' : user.address, # to self
        'value' : Web3.to_peb(0.1, 'klay'),
    })
    fee_delegated_value_transfer_tx = fill_transaction(fee_delegated_value_transfer_tx, w3)
    # sign the kaia specific transaction type with web3py
    signed_tx = Account.sign_transaction(fee_delegated_value_transfer_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 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_value_transfer_sign_recover()

output


❯ python txTypeFeeDelegatedValueTransferTransaction.py
raw transaction of signed tx: 0x09f8888203a1850ba43b740082f61894a2a8854b1802d8cd5de631e690817c253d6a915388016345785d8a000094a2a8854b1802d8cd5de631e690817c253d6a9153f847f8458207f6a07006976a09e86e21411150cd88e1fec86665e6f41fed2ff66a69ba9071703e60a0147322d15ebaa18232e7347fab53fb776580e8b03901b6f597be727cb927c2a7
recovered sender address 0xA2a8854b1802D8Cd5De631E690817c253d6a9153
raw transaction of signed tx: 0x09f8e68203a1850ba43b740082f61894a2a8854b1802d8cd5de631e690817c253d6a915388016345785d8a000094a2a8854b1802d8cd5de631e690817c253d6a9153f847f8458207f6a07006976a09e86e21411150cd88e1fec86665e6f41fed2ff66a69ba9071703e60a0147322d15ebaa18232e7347fab53fb776580e8b03901b6f597be727cb927c2a794cb0eb737dfda52756495a5e08a9b37aab3b271daf847f8458207f5a06de7be192af966e8790828854abe89e1d24a435e68c0e7ea6c715c5766d53535a06e0db3c509ac8cc7a7bb8e0fda203e9c27d24720b0dd977ac5ef2a88e2733d74
recovered feepayer address: ['0xCb0eb737dfda52756495A5e08A9b37AAB3b271dA']
decoded transaction: {
  "type": 9,
  "to": "0xA2a8854b1802D8Cd5De631E690817c253d6a9153",
  "value": 100000000000000000,
  "nonce": 929,
  "gasPrice": 50000000000,
  "gas": 63000,
  "from": "0xA2a8854b1802D8Cd5De631E690817c253d6a9153",
  "feePayer": "0xCb0eb737dfda52756495A5e08A9b37AAB3b271dA",
  "signatures": [
    {
      "v": 2038,
      "r": 50670685146210644758155850867516770752523795105304292948335149879423302385248,
      "s": 9249684688095617192077356690924587996686692201721973364886864134587743191719
    }
  ],
  "feePayerSignatures": [
    {
      "v": 2037,
      "r": 49711554177870114274420139373315961015019733371259804520392461387625282221365,
      "s": 49778623080725784202508291278316385863345609698048394072298591254748381527412
    }
  ],
  "chainId": 1001
}
tx hash:  0x5234733f874f5c8a77d6628be9958166f039f82a278888c4a6acaab17c2509ab receipt:  AttributeDict({'blockHash': HexBytes('0x2704d8b059545722008a338a1678d1dced73e8a96fb456e7b4cde051b9b9bbc0'), 'blockNumber': 148222496, 'contractAddress': None, 'cumulativeGasUsed': 31000, 'effectiveGasPrice': 25000000000, 'from': '0xA2a8854b1802D8Cd5De631E690817c253d6a9153', 'gasUsed': 31000, 'logs': [], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'), 'status': 1, 'to': '0xA2a8854b1802D8Cd5De631E690817c253d6a9153', 'transactionHash': HexBytes('0x5234733f874f5c8a77d6628be9958166f039f82a278888c4a6acaab17c2509ab'), 'transactionIndex': 0, 'type': 0})