dont_use_pointless_properties.py

class Server(object):
    def __init__(self, ip_address, username, password, port):
        self.ip_address = ip_address
        self.username = username
        self.password = password
        self.port = port
        self.update_base_url(ip_address, port)
    def update_base_url(self, ip_address, port):
        base_url = 'https://' + str(ip_address) + ':' + str(port) + '/'
        self.base_url = base_url
    def __delattr__(self, attr):
        raise AttributeError(f"Dont delete {attr}")