(classname, key, value)
Register class addon
Register class addon
Register class addon
def add_class_addon(classname, key, value):
    """Register class addon"""

    d = _class_addons.setdefault(classname, {})
    d.setdefault(key, []).append(value)
def add_class_addon ( classname , key , value ) : d = _class_addons . setdefault ( classname , { } ) d . setdefault ( key , [ ] ) . append ( value )