实现设备API Key轮换

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd, hashlib, secrets
    keys_csv = open_url(____).read()
    keys = pd.read_csv(StringIO(____)).copy()
    def rotate_key(____):
        idx = keys_df[keys_df['____']==device_id].index
        if idx.empty: return None, '____'
        new_raw = f"____"
        new_hash = hashlib.sha256(new_raw.encode()).hexdigest()
        keys_df.loc[idx[____], '____'] = new_hash
        keys_df.loc[idx[____], '____'] = new_raw[:____]
        return new_raw, '____'
    for did in ['____','____']:
        new_key, msg = rotate_key(____)
        print(____)
    print(____)