实现设备离线检测与自动恢复通知

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    devs_csv = open_url(____).read()
    devs = pd.read_csv(StringIO(____))
    import datetime
    EXPECTED_INTERVALS = {'____':____,'____':____,'____':____,'____':____}
    MISS_MULTIPLIER = ____
    def parse_ts(____):
        try: return datetime.datetime.strptime(str(____),'____').timestamp()
        except: return ____
    now_ts = datetime.datetime(____,____,____,____,____,____).timestamp()
    print(____)
    for _, dev in devs.iterrows():
        last_seen = parse_ts(____)
        interval = EXPECTED_INTERVALS.get(____)
        timeout = interval * MISS_MULTIPLIER
        elapsed = now_ts - last_seen
        status = '____' if elapsed > timeout else '____'
        print("____"+dev['____']+"____"+dev['____']+"____"+status+"____"+str(round(____))+"____"+str(____)+"____")