Anaconda Python-如何重新安装NumPy

Question

我在Visual Studio Code中使用Anaconda 5.3.0的Python解释器。当我尝试导入时sklearn出现错误：

Traceback (most recent call last):
  File "c:\Users\azzam\machinelearning.py", line 1, in <module>
    import sklearn
  File "C:\Anaconda3\lib\site-packages\sklearn\__init__.py", line 134, in <module>
    from .base import clone
  File "C:\Anaconda3\lib\site-packages\sklearn\base.py", line 10, in <module>
    import numpy as np
  File "C:\Anaconda3\lib\site-packages\numpy\__init__.py", line 142, in <module>
    from . import add_newdocs
  File "C:\Anaconda3\lib\site-packages\numpy\add_newdocs.py", line 13, in <module>
    from numpy.lib import add_newdoc
  File "C:\Anaconda3\lib\site-packages\numpy\lib\__init__.py", line 8, in <module>
    from .type_check import *
  File "C:\Anaconda3\lib\site-packages\numpy\lib\type_check.py", line 11, in <module>
    import numpy.core.numeric as _nx
  File "C:\Anaconda3\lib\site-packages\numpy\core\__init__.py", line 26, in <module>
    raise ImportError(msg)
ImportError:
Importing the multiarray numpy extension module failed.  Most
likely you are trying to import a failed build of numpy.
If you're working with a numpy git repo, try `git clean -xdf` (removes all
files not under version control).  Otherwise reinstall numpy.

Original error was: DLL load failed: The specified module could not be found.

看来我需要“重新安装” NumPy。我在网上搜索，但是找不到“重新安装”的方法。只有如何“安装”，以及当我使用

conda install numpy

在Anaconda Prompt中，我得到：

Solving environment: done

# All requested packages already installed.

如果我尝试删除NumPy再次安装，它将删除所有内容，而不仅仅是NumPy。那么，我真的需要“重新安装” NumPy才能导入sklearn吗？如果可以，如何“重新安装” NumPy？

Answer 1

如何重新安装软件包取决于conda版本。

较新的版本（> = 4.6）：

conda install numpy --force-reinstall

较旧版本（<4.6）：

conda install numpy --force

Answer 2

您很可能必须卸载 NumPy 并重新安装。

conda remove numpy

然后再次安装：

conda install -c anaconda numpy