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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def complete_opt(self, text, line, begidx, endidx):
 """ Autocomplete for options """

        tokens = line.split()
        if len(tokens) == 1:
            if text:
                return
            else:
                option = ""
        else:
            option = tokens[1]
        if len(tokens) == 1 or (len(tokens) == 2 and text):
            return [
                name[4:] + " " for name in dir(self) if name.startswith("opt_" + text)
            ]
        method = getattr(self, "complete_opt_" + option, None)
        if method is not None:
            return method(text, line, begidx, endidx)