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39 lines
1.4 KiB
39 lines
1.4 KiB
3 years ago
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# 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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# Modified from espnet(https://github.com/espnet/espnet)
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import importlib
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__all__ = ["dynamic_import"]
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def dynamic_import(import_path, alias=dict()):
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"""dynamic import module and class
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:param str import_path: syntax 'module_name:class_name'
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e.g., 'paddlespeech.s2t.models.u2:U2Model'
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:param dict alias: shortcut for registered class
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:return: imported class
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"""
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if import_path not in alias and ":" not in import_path:
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raise ValueError(
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"import_path should be one of {} or "
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'include ":", e.g. "paddlespeech.s2t.models.u2:U2Model" : '
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"{}".format(set(alias), import_path))
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if ":" not in import_path:
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import_path = alias[import_path]
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module_name, objname = import_path.split(":")
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m = importlib.import_module(module_name)
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return getattr(m, objname)
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