如何将包导入到 conda 环境中？

问题描述

我在 conda 中创建了一个虚拟环境。然后我在 anaconda 提示符 (conda activate) 上打开了环境。然后，我安装了我打算在该环境中使用的任何软件包（例如 numpy）。

当我打开 jupyter notebook 并运行 import numpy 时，这会显示错误

ImportError                               Traceback (most recent call last)
~\anaconda3\envs\new1\lib\site-packages\numpy\core\__init__.py in <module>
     21 try:
---> 22     from . import multiarray
     23 except ImportError as exc:

~\anaconda3\envs\new1\lib\site-packages\numpy\core\multiarray.py in <module>
     11 
---> 12 from . import overrides
     13 from . import _multiarray_umath

~\anaconda3\envs\new1\lib\site-packages\numpy\core\overrides.py in <module>
      6 
----> 7 from numpy.core._multiarray_umath import (
      8     add_docstring,implement_array_function,_get_implementing_args)

ImportError: DLL load Failed: The specified module Could not be found.

During handling of the above exception,another exception occurred:

ImportError                               Traceback (most recent call last)
<ipython-input-5-d4cdadb62aa7> in <module>
----> 1 import numpy

~\anaconda3\envs\new1\lib\site-packages\numpy\__init__.py in <module>
    143     from . import _distributor_init
    144 
--> 145     from . import core
    146     from .core import *
    147     from . import compat

~\anaconda3\envs\new1\lib\site-packages\numpy\core\__init__.py in <module>
     46 """ % (sys.version_info[0],sys.version_info[1],sys.executable,47         __version__,exc)
---> 48     raise ImportError(msg)
     49 finally:
     50     for envkey in env_added:

ImportError: 

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the numpy C-extensions Failed. This error can happen for
many reasons,often due to issues with your setup or how NumPy was
installed.

We have compiled some common reasons and troubleshooting tips at:

    https://numpy.org/devdocs/user/troubleshooting-importerror.html

Please note and check the following:

  * The Python version is: python3.7 from "C:\Users\<my user>\anaconda3\envs\new1\python.exe"
  * The NumPy version is: "1.20.1"

and make sure that they are the versions you expect.
Please carefully study the documentation linked above for further help.

Original error was: DLL load Failed: The specified module Could not be found.

我试过跑步

python
>>>import numpy

在 anaconda 提示符下，它确实成功导入了它。即使在 jupyter notebook 中，当我运行 help("modules") 时，numpy 也会显示为列出的模块之一。

预期行为是应导入已安装的模块。

如果有任何遗漏，请告诉我，这是我在 stackoverflow 上的第一篇文章。

解决方法

通常您会打开 anaconda 导航器，然后转到左侧的环境，然后在底部单击“添加”以添加新环境。之后，您单击新创建的环境并“打开终端”。在该终端中您使用：conda install -c anaconda numpy。现在，您应该可以直接从 anaconda 导航器打开 jupyter 笔记本，也可以通过终端启动它，一切正常。

如果它仍然不起作用，请尝试重新启动 anaconda，它不应该被要求，但有时它对我有用。

anaconda conda jupyter-notebook python