为什么conda无法创建安装了python = 3.4的环境

Question

我已经安装了miniconda 3，并想使用Python 3.4创建conda环境。我使用了命令：conda create -n myenv python=3.4并得到错误：

PackagesNotFoundError: The following packages are not available from current channels:
  - python=3.4

我试图将版本更改为3.7，键入3.7版本conda create -n myenv python=3.7 没有错误。因此，问题似乎与python的旧版本有关。

这是带有错误消息的完整输出：

Collecting package metadata (current_repodata.json): done
Solving environment: failed
Collecting package metadata (repodata.json): done
Solving environment: failed

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

  - python=3.4

Current channels:

  - 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.

Answer 1

您无法安装python 3.4软件包的原因是，您尝试安装的地方anaconda的默认通道中没有该软件包。

但是，我只是检查它在conda-forge通道中是否可用。因此，可以如下安装：

conda create -n myenv python=3.4 -c conda-forge