def _update_default(self, settings):
'''
update default settings
@param settings: new settings
'''
if KDefaults.implementedBy(settings):
self._default.update(object_walk(settings))
else:
raise TypeError('invalid default settings')
def defaults(self, value):
'''
set default settings separately
@param value: default settings
'''
if value is not None:
if KDefaults.implementedBy(value):
self._default.clear()
self._update_default(value)
else:
raise TypeError('invalid default settings')
