(base) PS C:\Users\Administrator> conda install scikit-learn Collecting package metadata (current_repodata.json): failed UnavailableInvalidChannel: HTTP 404 NOT FOUND for channel conda-forg <https://conda.anaconda.org/conda-forg> The channel is not accessible or is invalid. You will need to adjust your conda configuration to proceed. Use `conda config --show channels` to view your configuration's current state, and use `conda config --show-sources` to view config file locations.

看起来问题仍然存在。您可以尝试添加 conda-forge 频道并重新安装 scikit-learn：

conda config --add channels conda-forge
conda install scikit-learn

这应该会从 conda-forge 频道安装 scikit-learn。如果您仍然遇到问题，请让我知道。

相关问题

(base) PS C:\Users\Administrator> conda config --remove channels conda-forge (base) PS C:\Users\Administrator> conda install -c anaconda scikit-learn Collecting package metadata (current_repodata.json): failed UnavailableInvalidChannel: HTTP 404 NOT FOUND for channel conda-forg <https://conda.anaconda.org/conda-forg> The channel is not accessible or is invalid. You will need to adjust your conda configuration to proceed. Use `conda config --show channels` to view your configuration's current state, and use `conda config --show-sources` to view config file locations.

看起来问题仍然存在。您可以尝试清空 conda 的缓存并重新设置配置：

conda clean --all
conda config --set channel_priority strict
conda config --add channels defaults
conda config --add channels conda-forge
conda config --add channels anaconda

然后再运行以下命令来安装 scikit-learn：

conda install scikit-learn

这应该会从 defaults、conda-forge 或 anaconda 频道中的一个安装 scikit-learn。如果您仍然遇到问题，请让我知道。

(base) PS C:\Users\Administrator> conda config --set channel_priority flexible (base) PS C:\Users\Administrator> conda install scikit-learn Collecting package metadata (current_repodata.json): failed UnavailableInvalidChannel: HTTP 404 NOT FOUND for channel conda-forg <https://conda.anaconda.org/conda-forg> The channel is not accessible or is invalid. You will need to adjust your conda configuration to proceed. Use `conda config --show channels` to view your configuration's current state, and use `conda config --show-sources` to view config file locations.

由于conda-forge频道不可用或无效，因此您无法从中下载scikit-learn。您可以尝试添加其他频道来下载scikit-learn。

例如，您可以尝试添加anaconda频道，使用以下命令：

conda config --add channels anaconda

然后使用以下命令安装scikit-learn：

conda install scikit-learn

如果您仍然无法下载scikit-learn，请检查您的conda配置是否正确，并确保您没有添加无效的频道。您可以使用以下命令查看当前的频道配置：

conda config --show channels

希望这些步骤可以帮助您解决问题。