Source code for surrogate.selection.selRandom

# Copyright 2016 Quan Pan
# 
# 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.
#
# Author: Quan Pan <quanpan302@hotmail.com>
# License: Apache License, Version 2.0
# Create: 2016-12-02

import random

[docs]def selRandom(individuals, k=1):
    """Select *k* individuals at random from the input *individuals* with
    replacement. The list returned contains references to the input
    *individuals*.

    :param individuals: A list of individuals to select from.
    :param k: The number of individuals to select.
    :returns: A list of selected individuals.

    This function uses the :func:`~random.choice` function from the
    python base :mod:`random` module.
    """
    return [random.choice(individuals) for i in xrange(k)]