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2026-07-13 12:40:42 +08:00

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Python

# Copyright (c) 2019 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 numpy as np
from dygraph_to_static_utils import (
Dy2StTestBase,
)
import paddle
from paddle import nn
np.random.seed(1)
def apply_to_static(support_to_static, model, image_shape=None):
if support_to_static:
specs = None
model = paddle.jit.to_static(model, input_spec=specs)
return model
class Layer0(nn.Layer):
def __init__(self, level):
super().__init__()
self._linear1 = nn.Linear(10, 5)
self._linear2 = nn.Linear(10, 5)
self.layer1 = Layer1(level)
self.layer1 = apply_to_static(True, self.layer1)
def forward(self, x):
out1 = self._linear1(x)
out2 = self._linear2(x)
# out2.stop_gradient = True not raise error
a = [out1, out2]
b = self.layer1(a)
# self.layer1(out1, out2) will raise error
return b
class Layer1(nn.Layer):
def __init__(self, level):
super().__init__()
self.level = level
self._linear = nn.Linear(5, 2)
def forward(self, x):
inp = x[self.level]
val = self._linear(inp)
return val
class TestDuplicateOutput(Dy2StTestBase):
def test_case(self):
# create network
layer = Layer0(0)
a = paddle.rand(shape=[10, 10])
out = layer(a)
loss = out.mean()
loss.backward()
if __name__ == '__main__':
unittest.main()