# Copyright (c) 2020  PaddlePaddle Authors. All Rights Reserved.
#
# 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 paddle
import paddle.fluid as fluid

def select(x,
           input_shape, 
           point, 
           axis):
    start = point[0]
    if len(point) == 2:
        end = point[1]
    else:
        end = input_shape[axis]
    out = paddle.slice(x=x,
                       start=start,
                       end=end,
                       axes=[axis])
    return out