实现同类型设备批量广播指令

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd, json
    devs_csv = open_url(____).read()
    devs = pd.read_csv(StringIO(____))
    def broadcast_command(____):
        targets = devs[(____)&(____)]
        cmds = []
        for _, dev in targets.iterrows():
            cmds.append(____)
        return cmds
    cmds = broadcast_command('____', '____', json.dumps(____))
    print("____" + str(len(____)) + "____")
    for cmd in cmds:
        print(____)