安装 dask-ml 会引发“解决环境”错误

Question

尝试使用 conda 安装 dask-ml 时出现以下错误。任何想法如何解决这个问题？

(env3) C:\>conda install -c conda-forge dask-ml
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: -
Found conflicts! Looking for incompatible packages.
This can take several minutes.  Press CTRL-C to abort.
failed

UnsatisfiableError: The following specifications were found to be incompatible with each other:

Output in format: Requested package -> Available versions


(env3) C:\>

Answer 1

问题是无意中安装了 pip 将 python 从 3.8.5 升级到了 3.9.1 版本，恢复后解决了问题。