53 lines
1.6 KiB
Python
53 lines
1.6 KiB
Python
# Copyright The PyTorch Lightning team.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Custom dataloaders for testing."""
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class CustomInfDataloader:
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def __init__(self, dataloader):
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self.dataloader = dataloader
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self.iter = iter(dataloader)
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self.count = 0
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self.dataloader.num_workers = 0 # reduce chance for hanging pytest
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def __iter__(self):
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self.count = 0
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return self
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def __next__(self):
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if self.count >= 50:
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raise StopIteration
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self.count = self.count + 1
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try:
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return next(self.iter)
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except StopIteration:
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self.iter = iter(self.dataloader)
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return next(self.iter)
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class CustomNotImplementedErrorDataloader(CustomInfDataloader):
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def __len__(self):
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"""raise NotImplementedError."""
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raise NotImplementedError
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def __next__(self):
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if self.count >= 2:
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raise StopIteration
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self.count = self.count + 1
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try:
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return next(self.iter)
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except StopIteration:
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self.iter = iter(self.dataloader)
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return next(self.iter)
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