<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def _connect_func(builder, obj, signal_name, handler_name,
                  connect_object, flags, cls):
    '''Handles GtkBuilder signal connect events'''

    if connect_object is None:
        extra = ()
    else:
        extra = (connect_object,)

    # The handler name refers to an attribute on the template instance,
    # so ask GtkBuilder for the template instance
    template_inst = builder.get_object(cls.__gtype_name__)

    if template_inst is None:  # This should never happen
        errmsg = "Internal error: cannot find template instance! obj: %s; " \
                 "signal: %s; handler: %s; connect_obj: %s; class: %s" % \
                 (obj, signal_name, handler_name, connect_object, cls)
        warnings.warn(errmsg, GtkTemplateWarning)
        return

    handler = getattr(template_inst, handler_name)

    if flags == GObject.ConnectFlags.AFTER:
        obj.connect_after(signal_name, handler, *extra)
    else:
        obj.connect(signal_name, handler, *extra)

    template_inst.__connected_template_signals__.add(handler_name)