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我发现一个错误：

ValueError: {'code': -32601, 'message': 'The method eth_sendTransaction does not exist/is not available'}

当我在 infura.io（ropsten 测试网络）中部署一个可靠的智能合约时。但是当我尝试 ganache 时，合约在 ganache testRPC 上成功部署。这是我的 Python 文件下面的代码。

from web3 import Web3
from solcx import compile_files, link_code
import json

w3 = Web3(Web3.HTTPProvider("https://ropsten.infura.io/v3/<PROJECT_ID>"))



def separate_main_n_link(file_path, contracts):
    # separate out main file and link files
    # assuming first file is main file.
    main = {}
    link = {}

    all_keys = list(contracts.keys())
    for key in all_keys:
        if file_path[0] in key:
            main = contracts[key]
        else:
            link[key] = contracts[key]
    return main, link


def deploy_contract(contract_interface):
    # Instantiate and deploy contract
    contract = w3.eth.contract(
        abi=contract_interface['abi'], bytecode=contract_interface['bin'])

    acct = w3.eth.account.privateKeyToAccount("<PRIVATE_KEY>")

    # Get transaction hash from deployed contract
    tx_hash = contract.deploy(transaction={'from': acct.address})
    # Get tx receipt to get contract address
    tx_receipt = w3.eth.getTransactionReceipt(tx_hash)
    return tx_receipt['contractAddress']


def deploy_n_transact(file_path, mappings=[]):
    # compile all files
    contracts = compile_files(file_path, import_remappings=mappings)
    link_add = {}
    contract_interface, links = separate_main_n_link(file_path, contracts)

    # print (contract_interface)

    # first deploy all link libraries
    # here link is refers to the second contarct "stringUtils.sol"
    for link in links:
        link_add[link] = deploy_contract(links[link])    

    # now link dependent library code to main contract binary 
    # https://solidity.readthedocs.io/en/v0.4.24/using-the-compiler.html?highlight=library

    if link_add:
        contract_interface['bin'] = link_code(contract_interface['bin'], link_add)    

    # return contract receipt and abi(application binary interface)
    return deploy_contract(contract_interface), contract_interface['abi']



contract_address, abi = deploy_n_transact(['./contracts/Adoption.sol'])


with open('Adoption.json', 'w') as outfile:
    data = {
        "abi": abi,
        "contract_address": contract_address
    }
    json.dump(data, outfile, indent=4, sort_keys=True)

而solidity文件的版本是0.5.0。

pragma solidity ^0.5.0;


contract Adoption {
    address[16] public adopters;

    // Retrieving the adopters
    function getAdopters() public view returns (address[16] memory) {
        return adopters;
    }

        // Adopting a pet
        function adopt(uint petId) public returns (uint) {
            require(petId >= 0 && petId <= 15);

            adopters[petId] = msg.sender;

            return petId;
        }

}

但我认为它不会影响在区块链测试网络上部署 Solidity 智能合约的过程。提前致谢。

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