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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright (c) 2017 Cisco and/or its affiliates.
#
# 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:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# 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.
#

import warnings
import functools

def deprecated(func):
    """This is a decorator which can be used to mark functions
    as deprecated. It will result in a warning being emmitted
    when the function is used."""

    @functools.wraps(func)
    def new_func(*args, **kwargs):
        #warnings.simplefilter('always', DeprecationWarning) 
        warnings.warn("Call to deprecated function {}.".format(func.__name__),\
                category=DeprecationWarning, stacklevel=2)
        #warnings.simplefilter('default', DeprecationWarning) 
        return func(*args, **kwargs)

    return new_func