检测web3.py中已还原的事务

Question

我正在尝试检测函数调用是否已还原，我一直在获取事务哈希并且从未失败。

此错误是针对Web3.py的，该Web3.py不提供带事务处理的回调函数，在web3.js中启用了此将来。

def addParticipants(request):
    web3 = Web3(HTTPProvider(settings.Blockchain_IP_address, request_kwargs={'timeout': 60}))
    project_address = '0x93aeD90401a182247EE28848229531bC78053cd6'
    project = web3.eth.contract(address=project_address,
                                abi=Project_sol.abi,
                                bytecode=Project_sol.bytecode)
    func_to_call = 'addParticipant'
    addParticipant = project.functions[func_to_call]
    result = addParticipant(settings.ADMIN_ACCOUNT,0).transact(  {'from': settings.ADMIN_ACCOUNT, 'gasLimit': '6000000', 'gasPrice': '0', 'gas': 600000})
    web3.eth.waitForTransactionReceipt(result)
    print(result)

合同功能

function addParticipant(address _Participant, uint _weight)public isOwner returns (bool) {
    require(_weight!=0,"weight cannot be null");
    require(status,"this Donation is closed");

    Participants[_Participant].weight = _weight;
    Participants[_Participant].status = true;
    ParticipantsIndex[ParticipantsIndexSize] = _Participant;
    ParticipantsIndexSize++;

    emit ParticipantAction(_Participant, 'added');
    return true;
  }

我必须测试，

require(_weight!=0,"weight cannot be null");
require(status,"this Donation is closed");

如果没有成功，它应该还原并引发错误，但是我总是收到没有错误的事务哈希

Answer 1

您应检查交易收据。

result = addParticipant(settings.ADMIN_ACCOUNT,0).transact(  {'from': settings.ADMIN_ACCOUNT, 'gasLimit': '6000000', 'gasPrice': '0', 'gas': 600000})
receipt = web3.eth.waitForTransactionReceipt(result)
print(receipt['status'])

如果status字段为0，则表示事务已还原。