def __init__(self, chatui):
        """
        @param chatui: The GUI chat client associated with this contacts list.
        @type chatui: L{ChatUI}
        """
        self.chatui = chatui
        self.contacts = {}
        self.onlineContacts = {}
        self.clients = []

        @param chatui: The GUI chat client associated with this contacts list.
        @type chatui: L{ChatUI}
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/words/im/basechat.py