错误与页面状态：哪里失败了，以及是否该重试

import os
import random
import time

import requests

API = "https://llmwebsearch.com/api/v1/search"
HEADERS = {"Authorization": "Bearer " + os.environ["LLMWEBSEARCH_API_KEY"]}
RETRY_ON = {429, 502, 504}


def search(body, attempts=5):
    delay = 1.0
    for attempt in range(1, attempts + 1):
        resp = requests.post(API, headers=HEADERS, json=body, timeout=60)
        if resp.status_code == 200:
            return resp.json()
        err = resp.json().get("error", {})
        if resp.status_code not in RETRY_ON or attempt == attempts:
            raise RuntimeError(f"{resp.status_code} {err.get('code')}: {err.get('message')}")
        time.sleep(delay + random.uniform(0, delay / 2))
        delay = min(delay * 2, 30)


data = search({"q": "how to rotate api keys without downtime"})
unread = [r["url"] for r in data["results"] if r["content_status"] not in ("ok", "not_requested")]
print("credits:", data["credits_used"], "| pages not read:", unread)