ERROR: git+https://github.com/NVIDIA/DeepLearningExamples.git#subdirectory=Tools/lddl does not appear to be a Python project: neither 'setup.py' nor 'pyproject.toml' found.

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pip install git+https://github.com/NVIDIA/DeepLearningExamples.git#subdirectory=Tools/lddl Looking in indexes: https://mirrors.aliyun.com/pypi/simple Collecting git+https://github.com/NVIDIA/DeepLearningExamples.git#subdirectory=Tools/lddl Cloning https://github.com/NVIDIA/DeepLearningExamples.git to /tmp/pip-req-build-2mpwixi6 Running command git clone --filter=blob:none --quiet https://github.com/NVIDIA/DeepLearningExamples.git /tmp/pip-req-build-2mpwixi6 Resolved https://github.com/NVIDIA/DeepLearningExamples.git to commit a6c678ef0323cdaae053e9eed34dce94488ad313 Running command git submodule update --init --recursive -q ERROR: git+https://github.com/NVIDIA/DeepLearningExamples.git#subdirectory=Tools/lddl does not appear to be a Python project: neither 'setup.py' nor 'pyproject.toml' found