在 ganache 上调用函数时出现 Web3.py abi keyerror

Posted 2023-02-18

【中文标题】在 ganache 上调用函数时出现 Web3.py abi keyerror

【英文标题】：Web3.py abi keyerror while calling a function on ganache

【发布时间】：2020-05-18 02:29:13

【问题描述】：

我已经在 remix ide 中编译了我的代码。它在那里工作正常。我将编译细节中的字节码和 adi 复制到了我的 python 代码中。我使用 web3.py 作为外部库。但是当我尝试运行我的函数时，我收到一个错误keyerror。我想我需要将函数中的一些键作为参数传递，但无法找到方法。

这是我的代码

from web3 import Web3,HTTPProvider
import json

web_link="http://127.0.0.1:7545"


class FunderContract:
    web3 = Web3(Web3.HTTPProvider(web_link))

    def start(self,account_number):
        print("local host is ",self.web3.isConnected())
        print("first block at",self.web3.eth.blockNumber)

        self.web3.eth.defaultAccount=account_number


        abi = json.loads('["inputs":[],"stateMutability":"payable","type":"constructor","anonymous":false,"inputs":["indexed":false,"internalType":"address","name":"to","type":"address","indexed":false,"internalType":"address","name":"from","type":"address","indexed":false,"internalType":"uint256","name":"value","type":"uint256"],"name":"FundsSended","type":"event","inputs":["internalType":"address","name":"add","type":"address"],"name":"endWithdrawal","outputs":[],"stateMutability":"nonpayable","type":"function","inputs":["internalType":"address","name":"add","type":"address"],"name":"initiateWithdrawal","outputs":[],"stateMutability":"nonpayable","type":"function","inputs":["internalType":"address","name":"id","type":"address"],"name":"isAllowedToWithdraw","outputs":["internalType":"bool","name":"","type":"bool"],"stateMutability":"payable","type":"function","inputs":["internalType":"string","name":"name","type":"string"],"name":"register","outputs":[],"stateMutability":"nonpayable","type":"function","inputs":["internalType":"address payable","name":"add","type":"address"],"name":"registerFundi","outputs":[],"stateMutability":"payable","type":"function","inputs":["internalType":"address","name":"add","type":"address"],"name":"sendFunds","outputs":[],"stateMutability":"payable","type":"function","inputs":[],"name":"stage","outputs":["internalType":"enum Funders.Stage","name":"","type":"uint8"],"stateMutability":"view","type":"function","inputs":["internalType":"address","name":"fundee_id","type":"address","internalType":"enum Funders.voteDetail","name":"v","type":"uint8"],"name":"vote","outputs":[],"stateMutability":"nonpayable","type":"function","stateMutability":"payable","type":"receive"]')


        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16020900481019282601f106112e157805160ff191683800117855561130f565b8280016001018555821561130f579182015b8281111561130e5782518255916020019190600101906112f3565b5b50905061131c9190611320565b5090565b61134291905b8082111561133e576000816000905550600101611326565b5090565b9056fea2646970667358221220faca3dcd964f4917dbe19837b69f1ca4e4060e27338abe360253fc8353a2ab5964736f6c63430006010033'
        # address = web3.toChecksumAddress(address)
       Greeter = self.web3.eth.contract(abi=abi, bytecode=bytecode)
       tx_hash = Greeter.constructor().transact()
       tx_receipt = self.web3.eth.waitForTransactionReceipt(tx_hash)
       contract = self.web3.eth.contract(
         address=tx_receipt.contractAddress,
         abi=abi,
       )

       print(tx_receipt.contractAddress)

       tx_hash = contract.functions.register('name').transact()

if __name__ == "__main__":


        b=FunderContract()

        b.start("0x35286618aD7Ca934b0AA53FE110ec09569CAd507")
        a=b.funder_contract.functions.register('my').transact()
      `

我遇到了错误

File "main.py", line 41, in <module>
    b.start("0x35286618aD7Ca934b0AA53FE110ec09569CAd507")
  File "main.py", line 25, in start
    self.funder_contract.functions.register('my').transact()
  File "D:\mywork\ML\anaconda\envs\ethe_v\lib\site-packages\web3\contract.py", line 819, in __call__
    clone._set_function_info()
  File "D:\mywork\ML\anaconda\envs\ethe_v\lib\site-packages\web3\contract.py", line 829, in _set_function_info
    self.kwargs
  File "D:\mywork\ML\anaconda\envs\ethe_v\lib\site-packages\web3\_utils\contracts.py", line 119, in find_matching_fn_abi
    function_candidates = pipe(abi, name_filter, arg_count_filter, encoding_filter)
  File "cytoolz/functoolz.pyx", line 669, in cytoolz.functoolz.pipe
    return c_pipe(data, funcs)
  File "cytoolz/functoolz.pyx", line 644, in cytoolz.functoolz.c_pipe
    data = func(data)
  File "D:\mywork\ML\anaconda\envs\ethe_v\lib\site-packages\web3\_utils\abi.py", line 98, in filter_by_name
    in contract_abi
  File "D:\mywork\ML\anaconda\envs\ethe_v\lib\site-packages\web3\_utils\abi.py", line 102, in <listcomp>
    abi['name'] == name  # type: ignore
KeyError: 'name'

编辑 它适用于solidity 0.5.x ..

【参考方案1】：

web3py 仍不完全兼容solidity 0.6.x 版本。 查看链接。 https://github.com/ethereum/web3.py/issues/1566 您可以在此之前使用solidity 0.5.x 并通过链接跟踪进度。