近鉄

import pickle
import backoff
import requests
from bs4 import BeautifulSoup

url = "https://www.kintetsu.jp/unkou/unkou.html"

headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
}

p = pathlib.Path("kintetsu.pickle")
b = ""

if p.exists():

    with open(p, mode="rb") as fr:
        b = pickle.load(fr)


@backoff.on_exception(
    backoff.expo,
    requests.exceptions.RequestException,
    max_tries=5,
    giveup=lambda e: 400 <= e.response.status_code < 500,
)
def fetch_message(url):

    r = requests.get(url, headers=headers)
    r.raise_for_status()

    soup = BeautifulSoup(r.content, "lxml")

    message = soup.select_one("body > div > table > tr > td > font").get_text(
        strip=True
    )

    return message


s = fetch_message(url)

if b != s:
    t = s if len(s) < 140 else s[:138] + "…"
    print(t)

    with open(p, mode="wb") as fw:
        pickle.dump(s, fw)