python
    
    
def main():
    while not exchange.IO("status"):
        Sleep(1000)
    exchange.SetContractType("rb888")
    r = exchange.GetRecords(PERIOD_H1)
    if not r or len(r) < 48:
        return
    r = r[-48:]
    top = max(r, key=lambda b: b["Close"])
    LogStatus({
        "type": "chart", "title": "最近48小时",
        "x": [b["Time"] for b in r],
        "series": [
            {"name": "收盘价", "data": [b["Close"] for b in r]},
            {"name": "成交量", "kind": "bar", "axis": "right", "color": "muted",
             "data": [b["Volume"] for b in r]}
        ],
        "marks": [{"x": top["Time"], "text": "最高", "color": "up"}]
    })

    rust
    
    
fn join<T: ToString>(v: impl Iterator<Item = T>) -> String {
    v.map(|x| x.to_string()).collect::<Vec<_>>().join(",")
}

fn main() {
    while !exchange.IO("status").is_ok_and(|v| v.as_i64() == Some(1)) {
        Sleep(1000);
    }
    if exchange.SetContractType("rb888").is_err() { return; }
    let Ok(r) = exchange.GetRecords(None, PERIOD_H1, None) else { return };
    if r.len() < 48 { return; }
    let r = &r[r.len() - 48..];
    let top = r.iter().fold(&r[0], |a, b| if b.Close > a.Close { b } else { a });
    LogStatus!(format!(
        r#"{{"type": "chart", "title": "最近48小时", "x": [{}], "series": [
            {{"name": "收盘价", "data": [{}]}},
            {{"name": "成交量", "kind": "bar", "axis": "right", "color": "muted", "data": [{}]}}],
            "marks": [{{"x": {}, "text": "最高", "color": "up"}}]}}"#,
        join(r.iter().map(|b| b.Time)),
        join(r.iter().map(|b| b.Close)),
        join(r.iter().map(|b| b.Volume)),
        top.Time
    ));
}