40 lines
1.1 KiB
Python
40 lines
1.1 KiB
Python
# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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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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import random
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def cycle(iterable):
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# cycle('ABCD') --> A B C D A B C D A B C D ...
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saved = []
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for element in iterable:
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yield element
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saved.append(element)
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while saved:
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for element in saved:
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yield element
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def random_cycle(iterable):
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# cycle('ABCD') --> A B C D B C D A A D B C ...
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saved = []
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for element in iterable:
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yield element
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saved.append(element)
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random.shuffle(saved)
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while saved:
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for element in saved:
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yield element
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random.shuffle(saved)
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