ModuleNotFoundError: No module named ‘mmcv._ext

Problem: when installing mmdetection, mmcv is often installed, module not founderror: no module named ‘mmcv_ The problem of ext ‘pip install mmcv


pip install mmcv-full

If you have any strange problems, please use the version of mmcv that matches your environment, such as:

pip install mmcv-full==latest+torch1.5.0+cu101 -f

For the specific version, please refer to the GitHub description of mmcv. The link is as follows:

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