text: import httpx
  from nonebot import get_driver
  from nonebot.log import logger
  from nonebot.adapters.cqhttp import Message, MessageSegment
  
  global_config = get_driver().config
  httpx_proxy = {
      'http://': global_config.http_proxy,
      'https://': global_config.http_proxy
  }
  
  
  async def get_setu(key_word='', r18=False) -> Message:
      url = 'https://api.lolicon.app/setu/v2'
      params = {
          'r18': 1 if r18 else 0,
          'num': 1,
          'size': ['regular'],
          'proxy': 'i.pixiv.re',
          'keyword': key_word
      }
      try:
          async with httpx.AsyncClient() as client:
              resp = await client.get(url, params=params, timeout=20)
              result = resp.json()
          if result['error']:
              logger.warning('lolicon error: ' + result['error'])
              return None
          if result['data']:
              setu_url = result['data'][0]['urls']['regular']
              logger.info('Get setu url: ' + setu_url)
  
              async with httpx.AsyncClient() as client:
                  resp = await client.get(setu_url, timeout=20)
                  result = resp.content
  
              if result:
                  return MessageSegment.image(result)
              return None
          else:
              return '找不到相关的涩图'
      except Exception as e:
          logger.warning(f"Error in get_setu({key_word}): {e}")
          return None
  