未验证 提交 823f499a 编写于 作者: W wanghuancoder 提交者: GitHub

fix a bug of Sequential::__getitem__ (#30899)

* fix a bug of Sequential::__getitem__, test=develop

* add testcase, test=develop
上级 34f1628c
......@@ -67,7 +67,16 @@ class Sequential(Layer):
self.add_sublayer(str(idx), layer)
def __getitem__(self, name):
return self._sub_layers[str(name)]
if isinstance(name, slice):
return self.__class__(*(list(self._sub_layers.values())[name]))
else:
if name >= len(self._sub_layers):
raise IndexError('index {} is out of range'.format(name))
elif name < 0 and name >= -len(self._sub_layers):
name += len(self._sub_layers)
elif name < -len(self._sub_layers):
raise IndexError('index {} is out of range'.format(name))
return self._sub_layers[str(name)]
def __setitem__(self, name, layer):
assert isinstance(layer, Layer)
......
# Copyright (c) 2021 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 unittest
import paddle
class TestDataFeeder(unittest.TestCase):
def test_lod_level_1_converter(self):
sequential = paddle.nn.Sequential()
for i in range(10):
sequential.add_sublayer(str(i), paddle.nn.Linear(i + 1, i + 1))
for item in sequential:
tmp = item
tmp = sequential[3:5]
self.assertEqual(len(tmp), 2)
tmp = sequential[-1]
self.assertEqual(tmp, sequential[9])
with self.assertRaises(IndexError):
tmp = sequential[10]
with self.assertRaises(IndexError):
tmp = sequential[-11]
if __name__ == '__main__':
unittest.main()
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