我在 conda 中安装 scikit-learn 时出错

Question

When I tried to install scikit-learn in conda, I received below error

$ conda install scikit-learn 
Fetching package metadata ...........
Solving package specifications: .

Package plan for installation in environment     
/Users/xlnwel/anaconda/envs/ai:

The following NEW packages will be INSTALLED:

    scikit-learn: 0.19.0-np113py36_0
    scipy:        0.19.1-np113py36_0

Proceed ([y]/n)? y

ERROR conda.core.link:_execute_actions(335): An error occurred while installing package 'defaults::scipy-0.19.1-np113py36_0'.
FileExistsError(17, 'File exists')
Attempting to roll back.



FileExistsError(17, 'File exists')

I thought it might because the scipy already exists, so I tried to delete scipy, still received an error:

$ conda remove scipy
Fetching package metadata ...........
Solving package specifications: .


PackageNotFoundError: Package not found: Conda could not find '

What can I do now? I'm using Mac.

Answer 1

• 如果依赖项已经满足，请尝试安装scikit-learn包而忽略scipy包：

   conda install --no-deps scikit-learn

Answer 2

All these tricks didn't work in my ubuntu machine.

Eventually, need to specify numpy and scipy version. You can get the version by

conda list > /tmp/conda_tmp1
pip install -U scikit-learn
conda list > /tmp/conda_tmp2
diff /tmp/conda_tmp1 /tmp/conda_tmp2

then check the output