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临床试验科研伦理🍆国产aaaaa一区无码🍆亚洲国产精品无码2017

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import requests import time import random headers = { "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", "Accept-Language": "zh-CN,zh;q=0.9,en;q=0.8", "Connection": "keep-alive" } def visit_url(url): try: response = requests.get(url, headers=headers, timeout=10) if response.status_code == 200: print("成功") else: print(f"失败: {url}, 状态码: {response.status_code}") except Exception as e: print(f"访问失败: {e}") while True: for url in urls: # urls是目标URL列表 visit_url(url) time.sleep(random.randint(1, 5)) # 随机等待时间，避免被识别为机器人