从 curl -i 的输出里认东西
curl -i 打出来的响应长这样。先在这里练怎么抠状态码、内容类型和 title：
resp = "HTTP/1.0 200 OK\nServer: BaseHTTP/0.6 Python/3.11.2\nContent-Type: text/html; charset=utf-8\nContent-Length: 233\n\n<!doctype html><html><head><meta charset=\"utf-8\"><title>小站 · 首页</title></head><body>...</body></html>"
head, body = resp.split("\n\n", 1)
lines = head.split("\n")
status = lines[0].split()[1]
ctype = [l for l in lines if l.lower().startswith("content-type:")][0].split(": ", 1)[1]
title = body.split("<title>")[1].split("</title>")[0]
print(status + "/" + ctype.replace(" ", "_") + "/" + title.replace(" ", "_"))
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