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54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
# Copyright (c) 2022, NVIDIA CORPORATION. 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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"""
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Guard for importing optional NeMo dependency k2.
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Contains checks for k2 availability and version.
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Use `from nemo.core.utils.k2_guard import k2` to import k2 instead of direct import.
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If there is an error, the module will raise an exception with a helpful message.
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"""
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import textwrap
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from lightning.pytorch.utilities.imports import package_available
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from packaging.version import Version
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from nemo.core.utils.k2_utils import K2_INSTALLATION_MESSAGE
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__K2_MINIMUM_MAJOR_VERSION = 1
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__K2_MINIMUM_MINOR_VERSION = 14
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__K2_MINIMUM_VERSION = Version(f"{__K2_MINIMUM_MAJOR_VERSION}.{__K2_MINIMUM_MINOR_VERSION}")
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if not package_available("k2"):
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raise ModuleNotFoundError("Module k2 is not available.\n" + K2_INSTALLATION_MESSAGE)
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import k2 # noqa: E402
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try:
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__k2_version = Version(k2.__dev_version__)
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except AttributeError:
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raise ImportError("Module k2 is corrupted.\n" + K2_INSTALLATION_MESSAGE)
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if __k2_version < __K2_MINIMUM_VERSION:
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raise ImportError(
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textwrap.dedent(
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f"""
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Minimum required k2 version: {__K2_MINIMUM_VERSION};
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Installed k2 version: {__k2_version}
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"""
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)
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)
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