"kw">def find_anomaly(data, threshold=0.95):
    """从数据中找异常模式"""
    anomalies = []
    "kw">for item "kw">in data:
        "kw">if item.score > threshold:
            anomalies.append(item)
    "kw">class="kw">return anomalies

# 调用
results = find_anomaly(items)
print(f"找到 {len(results)} 个异常")  # 输出

"kw">SELECT user_id, COUNT(*) as cnt
"kw">FROM posts
"kw">WHERE created_at > '2026-01-01'
"kw">GROUP "kw">BY user_id
"kw">HAVING cnt > 100
"kw">ORDER "kw">BY cnt DESC;