我尝试了您在此处（在其他问题中）和https://github.com/smartcontractkit/full-blockchain-solidity-course-py/discussions/522的讨论中提到的所有内容，但这并没有为我解决问题，我还注意到当前编译器版本仍然存在（当前编译器是 0.6.12+commit.27d51765.Windows.msvc）。但是当我右键单击并选择 Solidty:Compiler information 时，它显示 0.8.0。
从输出：
Retrieving compiler information:
Compiler using remote version: 'v0.8.0+commit.c7dfd78e', solidity version: 0.8.0+commit.c7dfd78e.Emscripten.clang
不确定这是否与我面临的问题有关。无论如何，从我在运行 brownie compile 时看到的问题开始。我收到以下错误：
终端错误：
PS D:\Python projects\Solidity dev\demo\smartcontract-lottery> brownie compile
INFO: Could not find files for the given pattern(s).
Brownie v1.17.2 - Python development framework for Ethereum
Compiling contracts...
Solc version: 0.6.12
Optimizer: Enabled Runs: 200
EVM Version: Istanbul
CompilerError: solc returned the following errors:
C:/Users/rosne/.brownie/packages/OpenZeppelin/openzeppelin-contracts@4.3.0/contracts/access/Ownable.sol:3:1: ParserError: Source file requires different compiler version (current compiler is 0.6.12+commit.27d51765.Windows.msvc) - note that nightly builds are considered to be strictly less than the released version
pragma solidity ^0.8.0;
^---------------------^
C:/Users/rosne/.brownie/packages/smartcontractkit/chainlink-brownie-contracts@0.2.1/contracts/src/v0.8/VRFConsumerBase.sol:2:1: ParserError: Source file requires different compiler version (current compiler is 0.6.12+commit.27d51765.Windows.msvc) - note that nightly builds are considered to be strictly less than the released version
pragma solidity ^0.8.0;
^---------------------^
PS D:\Python projects\Solidity dev\demo\smartcontract-lottery>
我的 .sol 文件是 Lottery.sol：
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@chainlink/contracts/src/v0.8/VRFConsumerBase.sol";
contract Lottery is VRFConsumerBase, Ownable {
uint256 usdEntryFee;
address payable[] public players;
address payable public recentWinner;
uint256 public randomness;
AggregatorV3Interface internal ethUsdPriceFeed;
enum LOTTERY_STATE {
OPEN,
CLOSED,
CALCULATING_WINNER
}
LOTTERY_STATE public lottery_state;
uint256 public fee;
bytes32 public keyhash;
constructor(
address _priceFeedAddress,
address _vrfCoordinator,
address _link,
uint256 _fee,
bytes32 _keyhash
) public VRFConsumerBase(_vrfCoordinator, _link) {
usdEntryFee = 50 * (10**18);
ethUsdPriceFeed = AggregatorV3Interface(_priceFeedAddress);
lottery_state = LOTTERY_STATE.CLOSED;
fee = _fee;
keyhash = _keyhash;
}
function enter() public payable {
//$50 min
require(lottery_state == LOTTERY_STATE.OPEN);
require(msg.value >= getEntranceFee(), "Not enough ETH!");
players.push(payable(msg.sender));
}
function getEntranceFee() public view returns (uint256) {
(, int256 price, , , ) = ethUsdPriceFeed.latestRoundData();
uint256 adjustedPrice = uint256(price) * 10**12; //18 decimals
//$50, 2000 ETH
//50/2000
//50*10000/2000
uint256 costToEnter = (usdEntryFee * 10**18) / adjustedPrice;
return costToEnter;
}
function startLottery() public onlyOwner {
require(
lottery_state == LOTTERY_STATE.CLOSED,
"cant start a new lottery yet"
);
lottery_state = LOTTERY_STATE.OPEN;
}
function endLottery() public onlyOwner {
lottery_state = LOTTERY_STATE.CALCULATING_WINNER;
bytes32 requestId = requestRandomness(keyhash, fee);
}
function FulfillRandomness(bytes32 _requestId, uint256 _randomness)
internal
override
{
require(
lottery_state == LOTTERY_STATE.CALCULATING_WINNER,
"you arent there yet!"
);
require(_randomness > 0, "random not found");
uint256 indexOfWinner = _randomness % players.length;
recentWinner = players[indexOfWinner];
recentWinner.transfer(address(this).balance);
//reset
players = new address payable[](0);
lottery_state = LOTTERY_STATE.CLOSED;
randomness = _randomness;
}
}
我也尝试用谷歌搜索一些解决方案，所以我的 settings.json 文件有点不同，但这也没有帮助。
设置.json：
{
"solidity.compileUsingRemoteVersion": "v0.8.0+commit.c7dfd78e",
"solidity.defaultCompiler": "remote",
"solidity.compileUsingLocalVersion": "d:\\Python projects\\Solidity dev\\demo\\smartcontract-lottery\\soljson-v0.8.0+commit.c7dfd78e.js"
// "solidity.compileUsingRemoteVersion": "v0.7.4+commit.3f05b770",
// "solidity.enableLocalNodeCompiler": false
}
在 brownie-config.yaml 中，我尝试了所有版本的 openzepplin 合约，从旧版本到最新版本（4.4.0、4.3.0、4.3.2 等），但同样的错误。
布朗尼-config.yaml
dependencies:
- smartcontractkit/chainlink-brownie-contracts@1.1.1
- OpenZeppelin/openzeppelin-contracts@4.3.0
compiler:
solc:
remappings:
- '@chainlink=smartcontractkit/chainlink-brownie-contracts@0.2.1'
- '@openzeppelin=OpenZeppelin/openzeppelin-contracts@4.3.0'
networks:
mainnet-fork:
eth_usd_price_feed: '0xaEA2808407B7319A31A383B6F8B60f04BCa23cE2'
我还尝试更改 lottery.sol 文件中的编译器
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
现在我得到一个不同的错误。完全迷失在这里:(
终端：
INFO: Could not find files for the given pattern(s).
Brownie v1.17.2 - Python development framework for Ethereum
Compiling contracts...
Solc version: 0.8.11
Optimizer: Enabled Runs: 200
EVM Version: Istanbul
CompilerError: solc returned the following errors:
ParserError: Source file requires different compiler version (current compiler is 0.8.11+commit.d7f03943.Windows.msvc) - note that nightly builds are considered to be strictly less than the released version
--> C:/Users/rosne/.brownie/packages/smartcontractkit/chainlink-brownie-contracts@0.2.1/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol:2:1:
|
2 | pragma solidity ^0.6.0;
| ^^^^^^^^^^^^^^^^^^^^^^^
PS D:\Python projects\Solidity dev\demo\smartcontract-lottery>
我对 Solidity 编程非常陌生，这是我学习的第一门课程，我不想这么轻易放弃，非常感谢任何帮助。
