pip安装sklearn库的两个小问题：1）ModuleNotFoundError: No module named ‘sklearn‘ 2）No module named ‘sklearn.lda‘

墨蓝 2023-09-29 20:31 15阅读 0赞

**报错情况（1）：**

使用 pip install sklearn 后import sklearn依旧报错：ModuleNotFoundError: No module named 'sklearn'

![a09b6ee7e8fb46eaa4d33230d6c1e037.png][]

**解决方案（1）：**

报错的缺少sklearn是scikit-learn缩写，故使用命令：**`pip install scikit-learn`**进行安装，安装后即可import sklearn：

![6359e66950304f59afb3e137c79b7ca9.png][]

**报错情况（2）：**

ModuleNotFoundError: No module named 'sklearn.lda'

**解决方案（2）：**

**原因：**由于版本更新导致，sklearn0.16版本之前的函数包含sklearn.lda，但是自0.17版本后，该函数被替换或重构了，详情参考：[https://scikit-learn.org/stable/modules/generated/sklearn.discriminant\_analysis.LinearDiscriminantAnalysis.html][https_scikit-learn.org_stable_modules_generated_sklearn.discriminant_analysis.LinearDiscriminantAnalysis.html]![d50ce1fa72d14cb6b5d1a284695369b4.png][] 首先查看自己的sklearn版本：

import sklearn
    print(sklearn.__version__)

![6e1ccd8ded4e420d878cd9cd44e41992.png][]

因为高于0.16版本所以将：

from sklearn.lda import LDA

修改为：

from sklearn.discriminant_analysis import LinearDiscriminantAnalysis as LDA

[a09b6ee7e8fb46eaa4d33230d6c1e037.png]: https://img-blog.csdnimg.cn/a09b6ee7e8fb46eaa4d33230d6c1e037.png
[6359e66950304f59afb3e137c79b7ca9.png]: https://img-blog.csdnimg.cn/6359e66950304f59afb3e137c79b7ca9.png
[https_scikit-learn.org_stable_modules_generated_sklearn.discriminant_analysis.LinearDiscriminantAnalysis.html]: https://scikit-learn.org/stable/modules/generated/sklearn.discriminant_analysis.LinearDiscriminantAnalysis.html
[d50ce1fa72d14cb6b5d1a284695369b4.png]: https://img-blog.csdnimg.cn/d50ce1fa72d14cb6b5d1a284695369b4.png
[6e1ccd8ded4e420d878cd9cd44e41992.png]: https://img-blog.csdnimg.cn/6e1ccd8ded4e420d878cd9cd44e41992.png