我一直在玩 Hedera SDK 和它的 Python 包装器。几个小时前，我有一个工作示例，我能够创建一个具有初始余额的新帐户。
现在，几个小时后，相同的代码失败并出现以下错误（Testnet）：
Exception has occurred: JavaException
JVM exception occurred: Hedera transaction `0.0.29467648@1642981813.928678616` failed pre-check with the status `INSUFFICIENT_TX_FEE` com.hedera.hashgraph.sdk.PrecheckStatusException
File "/home/.../src/utils/hedera.py", line 101, in __init__
AccountCreateTransaction()
File "/home/.../src/main.py", line 21, in <module>
new_account: HederaAccount = HederaAccount(client, initial_balance=100_000)
我一直试图找到根本原因并修复，但到目前为止没有运气（官方文档/github/anywhere）。我在 GitHub 中找到了一些评论，其中提到在配置客户端时必须指定最大交易费用，其值大于 100_000 tinybars。我做到了，但仍然是同样的错误。
这是我用来配置客户端的辅助函数：
def get_client(
account_id: Optional[AccountId] = None, private_key: Optional[PrivateKey] = None
) -> Client:
logger.debug(f"Hedera::get_client - create account_id")
_account_id: AccountId = (
account_id if account_id else Hedera.load_account_from_id()
)
logger.debug(f"Hedera::get_client - create account_id")
private_key: PrivateKey = (
private_key
if private_key
else Hedera.load_private_key(config["account"]["private_key"])
)
logger.debug(f"Hedera::get_client - create client")
client: Client = (
Client.forTestnet()
if config["env"] == DeploymentEnv.Development.value
else Client.forMainnet()
)
logger.debug(f"Hedera::get_client - set operator")
client.setOperator(_account_id, private_key)
# I just added this line (not required a couple of hours ago), still same error
client.setMaxTransactionFee(Hbar.fromTinybars(200_000))
logger.debug(f"Hedera::get_client - client: {client.toString()}")
return client
这是创建新帐户和引发错误的类：
class HederaAccount:
def __init__(
self,
client,
account_id: Optional[AccountId] = None,
private_key: Optional[PrivateKey] = None,
initial_balance: Optional[int] = 1_000_000,
) -> None:
self.client: Client = client
if account_id:
logger.debug(
f"HederaAccount::init - existent account id: {account_id.toString()}"
)
if not private_key:
raise Exception(
"When loading an existing account, 'private_key' is required"
)
self.account_id = account_id
self.private_key = private_key
self.public_key = self.private_key.getPublicKey()
self.node_id: Optional[AccountId] = None
else:
self.private_key: PrivateKey = PrivateKey.generate()
self.public_key: PublicKey = self.private_key.getPublicKey()
tx_resp: TransactionResponse = (
AccountCreateTransaction()
.setKey(self.public_key)
.setInitialBalance(Hbar.fromTinybars(initial_balance))
.execute(client)
)
self.node_id: AccountId = tx_resp.nodeId
tx_receipt: TransactionReceipt = tx_resp.getReceipt(self.client)
self.account_id: AccountId = tx_receipt.accountId
logger.debug(
f"HederaAccount::init - new account id: {self.account_id.toString()}"
)
这就是我创建/加载帐户的方式：
root_account_id = Hedera.load_account_id()
root_private_key = Hedera.load_private_key()
client = Hedera.get_client(account_id=root_account_id, private_key=root_private_key)
# Load root account (no problems here)
root_account: HederaAccount = HederaAccount(
client, account_id=root_account_id, private_key=root_private_key
)
logger.info(f"Root account: {root_account}")
logger.info("\n\n")
# Create a new account (Failing here)
new_account: HederaAccount = HederaAccount(client, initial_balance=100_000)
logger.info(f"New account: {new_account}")
logger.info("\n\n")
由于我在测试网中运行我的代码，我的帐户 (root_account) 有足够的 HBAR 来支付创建新帐户 (new_account) 的费用。
hedera-sdk-py：2.6.0
回购： https ://github.com/ccddan/hbar-hello-world/blob/feature/nfts/src/nft.py
欢迎任何提示，包括指向良好Hedera 文档的链接。谢谢！
