我正在尝试在 R 中使用 python 包，但我不断收到相同的错误：

ImportError: cannot import name 'read_csv' from 'pandas' (unknown location)

我也不能使用“py_install”：

Collecting package metadata (current_repodata.json): ...working... done
Solving environment: ...working... failed with initial frozen solve. Retrying with flexible solve.
Collecting package metadata (repodata.json): ...working... done
Solving environment: ...working... failed with initial frozen solve. Retrying with flexible solve.

PackagesNotFoundError: The following packages are not available from current channels:

  - python=3.1

Current channels:

  - https://conda.anaconda.org/conda-forge/win-64
  - https://conda.anaconda.org/conda-forge/noarch
  - https://repo.anaconda.com/pkgs/main/win-64
  - https://repo.anaconda.com/pkgs/main/noarch
  - https://repo.anaconda.com/pkgs/r/win-64
  - https://repo.anaconda.com/pkgs/r/noarch
  - https://repo.anaconda.com/pkgs/msys2/win-64
  - https://repo.anaconda.com/pkgs/msys2/noarch

To search for alternate channels that may provide the conda package you're
looking for, navigate to

    https://anaconda.org

and use the search bar at the top of the page.


Error: one or more Python packages failed to install [error code 1]

我尝试指定包所在的文件夹，但它不起作用。 希望大家能帮忙。

My code:

library(reticulate)
use_condaenv("C:/Users/Bruger/AppData/Local/r-miniconda/envs/r-reticulate")
import("pandas")

py = py_run_string

py("import pandas as pd")
py("from pandas import read_csv")

Conda 4.10 与 python 3.10 不兼容。

这个问题与R无关，也许你的代码没有任何问题。以下 SO 问题也出现了相同类型的问题：

• PyTorch 安装要求 python=3.1 。安装的Python版本：3.10.0 https://stackoverflow.com/questions/70154524/pytorch-installation-asks-for-python-3-1-python-version-installed-3-10-0
• 尝试在 R 上安装 Earth Engine； python=3.1 不可用 https://stackoverflow.com/questions/69782612/trying-to-install-earth-engine-on-r-python-3-1-not-available
• 为什么我无法使用 pip 或 miniconda 安装 matplotlib 或 pandas？ https://stackoverflow.com/questions/69731871/why-cant-i-install-matplotlib-or-pandas-with-pip-or-miniconda/70297064#70297064

解决方案

如果你需要 python 3.10+

如果您需要 python 3.10 或更高版本，则必须有 conda 4.11 或更高版本。安装所需的conda版本，或切换到基础环境并更新康达 https://docs.anaconda.com/anaconda/install/update-version/ using conda update conda。就像是：

conda activate base
conda update conda
conda create --name r-reticulate python=3.10 pandas numpy scipy matplotlib scikit-learn
conda activate r-reticulate

您可能需要向您的 conda 添加非默认通道，因为我得到了UnsatisfiableError使用它。例如，通过使用 conda-forge 通道，我没有收到任何错误（但这可能会安装比通常更新的软件包）：

conda create --name r-reticulate -c conda-forge python=3.10 pandas numpy scipy matplotlib scikit-learn

如果你想保留旧的康达

使用 python 3.9 或更早版本从基础安装另一个环境

conda activate base
conda create --name r-reticulate python=3.9 pandas numpy scipy matplotlib sklearn
conda activate r-reticulate

其他症状

创建并激活 python 3.10 环境后，您基本上无法安装任何东西。你甚至无法安装 conda-build：

conda install conda-build -y
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.

ResolvePackageNotFound:
  - python=3.1

Conda 4.10 包含 python 3.9，conda 4.11 包含 python 3.10 https://docs.conda.io/projects/conda/en/latest/release-notes.html，所以你的基础环境应该与其中的python版本兼容。

复制？

如果您认为您的问题重复，请检查如何改进它 https://meta.stackexchange.com/questions/10841/how-should-duplicate-questions-be-handled.

这个答案符合meta https://meta.stackexchange.com/questions/104227/is-it-acceptable-to-add-a-duplicate-answer-to-several-questions。我相信这是一个例子应该接受完全相同的答案 http://meta.stackexchange.com/q/267318/178179，但我也定制了问题的答案。