使用简单方便，轻松实现异步请求的 HTTP 客户端（Python 3.8+)。示例代码： ```python >>> import httpx # 同步 >>> r = httpx.get('https://www.example.org/') >>> r <Response [200 OK]> >>> r.status_code # 异步 >>> async with httpx.AsyncClient() as client: >>> r = await client.get('https://www.example.org/') >>> r <Response [200 OK]> ```