
class Subscriber():

    def __init__(self, *args, **kwargs):
        """
        subscriber...IoT item
        """
        pass

    def connect(self):
        return 'Subscriber'


class Publisher():
    def __init__(self, *args, **kwargs):
        """
        timetraveler
        arguments:date=***, lang=***, zone=***
        """
        pass

    def connect(self):
        return 'Publisher'


class Subscriber():

    def __init__(self, *args, **kwargs):
        """
        subscriber...IoT item
        """
        pass

    def connect(self):
        return 'Subscriber'


class Publisher():
    def __init__(self, *args, **kwargs):
        """
        timetraveler
        arguments:date=***, lang=***, zone=***
        """
        pass

    def connect(self):
        return 'Publisher'

subscriber...IoT item timetraveler         arguments:date=***, lang=***, zone=***