| """Fetch one provider pricing page as text, only if robots.txt allows it. At most 1 request per second. |
| Pages go to intern/pages/ for a human-style read; only extracted facts go into data/free_tiers.csv.""" |
| import html |
| import pathlib |
| import re |
| import sys |
| import time |
| import urllib.parse |
| import urllib.request |
| import urllib.robotparser |
|
|
| UA = "free-tier-dataset/0.1 (+mailto:novusops@mail.grokbot.com)" |
| ROOT = pathlib.Path(__file__).resolve().parent.parent |
|
|
|
|
| def allowed(url): |
| p = urllib.parse.urlparse(url) |
| rp = urllib.robotparser.RobotFileParser() |
| rp.set_url(f"{p.scheme}://{p.netloc}/robots.txt") |
| try: |
| req = urllib.request.Request(rp.url, headers={"User-Agent": UA}) |
| with urllib.request.urlopen(req, timeout=20) as r: |
| rp.parse(r.read().decode(errors="ignore").splitlines()) |
| except Exception: |
| rp.parse([]) |
| time.sleep(1) |
| return rp.can_fetch(UA, url) |
|
|
|
|
| def to_text(raw): |
| raw = re.sub(r"(?is)<(script|style|noscript|svg)[^>]*>.*?</\1>", " ", raw) |
| raw = re.sub(r"(?s)<[^>]+>", " ", raw) |
| return re.sub(r"\s+", " ", html.unescape(raw)) |
|
|
|
|
| def fetch(pid, url): |
| if not allowed(url): |
| print(f"{pid}: robots.txt disallows {url}, skipped") |
| return None |
| req = urllib.request.Request(url, headers={"User-Agent": UA}) |
| with urllib.request.urlopen(req, timeout=30) as r: |
| txt = to_text(r.read().decode(errors="ignore")) |
| (ROOT / "intern" / "pages" / f"{pid}.txt").write_text(txt) |
| time.sleep(1) |
| print(f"{pid}: {len(txt)} chars") |
| return txt |
|
|
|
|
| if __name__ == "__main__": |
| fetch(sys.argv[1], sys.argv[2]) |
|
|
