python/subscriber_udp.py
def subscriber_callback(sock, buffersize):
    """
    Receives the data from the publisher.

    Args:
        sock:
            The UDP socket class.

    Returns:
        return_flag:
            The return_flag is a boolean variable which shows if 
            the subscriber receives the data. True for yes; False for no.

    Returns the boolean flag (True). You can also do something else
    when the subscriber doesn't receive the data.
    """

    msg = sock.recv(buffersize)
    if msg:
        """
        Here, the argument 'ddd' doesn't adjust its length automatically given the json file parameters.
        I can do that. But I just want to highlight that you can also use struct.pack to send data as well.
        """
        data = struct.unpack('ddd', msg)
        print("Received the data from the publisher.")
        print(data)
        return_flag = True
    else:
        print("Didn't receive the data from the publisher.")
        return_flag = False
        # do something else
    return return_flag

    Receives the data from the publisher.

    Args:
        sock:
            The UDP socket class.

    Returns:
        return_flag:
            The return_flag is a boolean variable which shows if 
            the subscriber receives the data. True for yes; False for no.

    Returns the boolean flag (True). You can also do something else
    when the subscriber doesn't receive the data.
    
Receives the data from the publisher.
Receives the data from the publisher .
def subscriber_callback(sock, buffersize):
    msg = sock.recv(buffersize)
    if msg:
        data = struct.unpack('ddd', msg)
        print("Received the data from the publisher.")
        print(data)
        return_flag = True
    else:
        print("Didn't receive the data from the publisher.")
        return_flag = False
    return return_flag
def subscriber_callback ( sock , buffersize ) : msg = sock . recv ( buffersize ) if msg : """
        Here, the argument 'ddd' doesn't adjust its length automatically given the json file parameters.
        I can do that. But I just want to highlight that you can also use struct.pack to send data as well.
        """ data = struct . unpack ( 'ddd' , msg ) print ( "Received the data from the publisher." ) print ( data ) return_flag = True else : print ( "Didn't receive the data from the publisher." ) return_flag = False return return_flag
Receives the data from the publisher.
Receives the data from the publisher .
"""
    Receives the data from the publisher.

    Args:
        sock:
            The UDP socket class.

    Returns:
        return_flag:
            The return_flag is a boolean variable which shows if 
            the subscriber receives the data. True for yes; False for no.

    Returns the boolean flag (True). You can also do something else
    when the subscriber doesn't receive the data.
    """ """
        Here, the argument 'ddd' doesn't adjust its length automatically given the json file parameters.
        I can do that. But I just want to highlight that you can also use struct.pack to send data as well.
        """ # do something else
The return_flag is a boolean variable which shows if
the subscriber receives the data. True for yes; False for no.
The return_flag is a boolean variable which shows if the subscriber receives the data . True for yes ; False for no .
return_flag
sock
The UDP socket class.
The UDP socket class .
buffersize