Python SDK：模拟交易

模拟交易可在不支付费用的情况下预览提交交易的成本和效果。可用于估算费用、测试交易，或查看可能的输出。

要模拟交易，请传入原始交易和发送方公钥：

import asyncio

from aptos_sdk.v2 import Account, Aptos, AptosConfig, Network
from aptos_sdk.v2.bcs import Serializer
from aptos_sdk.v2.transactions import EntryFunction, TransactionArgument, TransactionPayload
from aptos_sdk.v2.types import StructTag, TypeTag


async def main():
    async with Aptos(AptosConfig(network=Network.DEVNET)) as aptos:
        alice = Account.generate()
        bob = Account.generate()

        await aptos.faucet.fund_account(alice.address, 100_000_000)
        await aptos.faucet.fund_account(bob.address, 10_000_000)

        payload = EntryFunction.natural(
            "0x1::coin",
            "transfer",
            [TypeTag(StructTag.from_str("0x1::aptos_coin::AptosCoin"))],
            [
                TransactionArgument(bob.address, Serializer.struct),
                TransactionArgument(50_000, Serializer.u64),
            ],
        )
        raw_txn = await aptos.transaction.build(
            sender=alice.address,
            payload=TransactionPayload(payload),
        )

        simulation_result = await aptos.transaction.simulate(raw_txn, alice.public_key)
        print(f"Success: {simulation_result[0]['success']}")
        print(f"Gas used: {simulation_result[0]['gas_used']}")
        print(f"VM status: {simulation_result[0]['vm_status']}")


asyncio.run(main())

完整的构建、模拟和提交示例如下，见 这里。

也可以通过以下指南了解如何模拟更高级的交易：

• Sponsored Transactions
• Multi-Agent Transactions