python
    
    
def main():
    maxBaseCurrency = null
    level = GetMeta()

    if level == "level1":
        maxBaseCurrency = -1
    elif level == "level2":
        maxBaseCurrency = 10
    elif level == "level3":
        maxBaseCurrency = 1
    else:
        maxBaseCurrency = 0.5

    while not exchange.IO("status"):
        Sleep(1000)

    exchange.SetContractType("rb888")

    while True:
        Sleep(1000)
        ticker = exchange.GetTicker()
        acc = exchange.GetAccount()
        if maxBaseCurrency != -1 and maxBaseCurrency < acc["Balance"] + acc["FrozenBalance"]:
            LogStatus(_D(), "level:", level, "持仓超过注册码的使用限制，不再执行策略交易逻辑！")
            continue

        # 其他交易逻辑

        # 正常输出状态栏信息
        LogStatus(_D(), "level:", level, "策略正常运行！ticker 数据：\n", ticker)

    rust
    
    
fn main() {
    // 策略允许的计价币最大资产数量
    let maxBaseCurrency;

    // 获取创建注册码时的元数据
    let meta = GetMeta();
    let level = meta.as_str().unwrap_or("");

    // 检测 Meta 对应的条件
    if level == "level1" {
        // -1 表示不限制
        maxBaseCurrency = -1.0;
    } else if level == "level2" {
        maxBaseCurrency = 10.0;
    } else if level == "level3" {
        maxBaseCurrency = 1.0;
    } else {
        maxBaseCurrency = 0.5;
    }

    // 鉴于此为测试代码，未采用商品期货策略的通用架构，这里仅通过 exchange.IO("status") 函数判断连接期货公司前置机成功后，立即执行测试代码。股票证券无需使用 exchange.IO("status") 判断连接状态
    while !exchange.IO("status").is_ok_and(|v| v.as_i64() == Some(1)) {
        Sleep(1000);
    }

    exchange.SetContractType("rb888").unwrap();

    loop {
        Sleep(1000);
        let ticker = exchange.GetTicker(None).unwrap();

        // 检测资产数值
        let acc = exchange.GetAccount().unwrap();
        if maxBaseCurrency != -1.0 && maxBaseCurrency < acc.Balance + acc.FrozenBalance {
            // 停止执行策略交易逻辑
            LogStatus!(_D(None), "level:", level, "持仓超过注册码的使用限制，不再执行策略交易逻辑！");
            continue;
        }

        // 其他交易逻辑

        // 正常输出状态栏信息
        LogStatus!(_D(None), "level:", level, "策略正常运行！ticker 数据：\n", ticker);
    }
}