关于#误删#的问题，如何解决？

我根据“mmdet重装方法--解决一般安装失败问题”这篇博客进行mmdet卸载，主要执行的命令是以下四句：

#### 卸载mmcv-full
pip uninstall mmcv-full
#### 卸载mmdet
pip uninstall mmdet
#### 删除所有编译包(很重要，不然卸载重装不会重新编译，很容易报错）
rm -rf build
#### 删除动态库
find . -name "*.so" -type f -delete

但执行结束后conda等命令不能正常使用，如下：
（1） conda env list

Traceback (most recent call last):
  File "/home/project_J/anaconda3/bin/conda", line 12, in 
    from conda.cli import main
  File "/home/project_J/anaconda3/lib/python3.9/site-packages/conda/__init__.py", line 22, in 
    from .common.compat import text_type, iteritems
  File "/home/project_J/anaconda3/lib/python3.9/site-packages/conda/common/compat.py", line 14, in 
    from tempfile import mkdtemp
  File "/home/project_J/anaconda3/lib/python3.9/tempfile.py", line 45, in 
    from random import Random as _Random
  File "/home/project_J/anaconda3/lib/python3.9/random.py", line 49, in 
    from math import log as _log, exp as _exp, pi as _pi, e as _e, ceil as _ceil
ModuleNotFoundError: No module named 'math'

请问该问题要怎么解决，谢谢！