# -*- coding: utf-8 -*-
Copyright 2014-2015 Teppo Perä
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
from pytraits.core import TraitFactory
from pytraits.support import type_converted
TraitTarget = TraitFactory["TraitTargetInspector"]
Traits = TraitFactory["Traits"]
[docs]def add_traits(target: TraitTarget, *traits, **resolutions):
""" Bind new traits to given object.
target: Object of any type that is going to be extended with traits
traits: Tuple of traits as object and strings or callables or functions.
resolutions: dictionary of conflict resolutions to solve situations
where multiple methods or properties of same name are
encountered in traits.
>>> class ExampleClass:
... def example_method(self):
... return None
>>> class ExampleTrait:
... def other_method(self):
... return 42
>>> add_traits(ExampleClass, ExampleTrait)
# Return immediately, if no traits provided.
if not len(traits):
# Just prepare object to start the work and get done with it.
traits = Traits(traits)
# This call puts all gears moving. Each trait in turn is being added
# to target object. Resolutions are used to solve any conflicts along
# the way.
if __name__ == '__main__':