No module named 'mmcv._ext'

[cugRoman]

我按照requirements.txt的环境跑测试代码，在代码from mmseg.models.segmentors import BaseSegmentor会报错ModuleNotFoundError: No module named 'mmcv._ext'，不知道作者有没有遇到这种情况，又是如何解决的

[LiPang]

应该是mmcv版本不对。试试版本
Name: mmcv
Version: 2.1.0
Summary: OpenMMLab Computer Vision Foundation
Home-page: https://github.com/open-mmlab/mmcv
Author: MMCV Contributors
Author-email: openmmlab@gmail.com
License:
Location: /data01/pl/anaconda3/envs/sam2/lib/python3.10/site-packages
Requires: addict, mmengine, numpy, packaging, Pillow, pyyaml, yapf
Required-by:

[cugRoman]

谢谢，我已经改好了

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---Original--- From: ***@***.***> Date: Mon, Dec 8, 2025 12:35 PM To: ***@***.***>; Cc: ***@***.******@***.***>; Subject: Re: [LiPang/SPECIAL] No module named 'mmcv._ext' (Issue #5) LiPang left a comment (LiPang/SPECIAL#5) 应该是mmcv版本不对 — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[jinec]

@cugRoman 怎么改的呀