ImportError: cannot import name ‘ball_query_ext‘ from ‘mmdet3d.ops.ball_query‘

报错：

ImportError: cannot import name 'ball_query_ext' from 'mmdet3d.ops.ball_query'

解决方案

git clone https://github.com/open-mmlab/mmcv.git
git tag
cd mmcv
ls
git branch
git checkout -b v1.4.0 v1.4.0
git tag
git tag
git log


MMCV_WITH_OPS=1 pip install -e .
cd ..

git clone https://github.com/open-mmlab/mmdetection.git
cd mmdetection
git checkout -b v2.14.0 v2.14.0
pip install -r requirements/build.txt
pip install -v -e .
cd ..

git clone https://github.com/open-mmlab/mmdetection3d.git
cd mmdetection3d
git checkout -b v0.17.1
git checkout -b v0.17.2
pip install -v -e .