title: Anaconda Python - how to reinstall NumPy
body: <p>I am using Anaconda 5.3.0's Python interpreter in Visual Studio Code. When I try to import <code>sklearn</code> I get an error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "c:\Users\azzam\machinelearning.py", line 1, in &lt;module&gt;
      import sklearn
    File "C:\Anaconda3\lib\site-packages\sklearn\__init__.py", line 134, in &lt;module&gt;
      from .base import clone
    File "C:\Anaconda3\lib\site-packages\sklearn\base.py", line 10, in &lt;module&gt;
      import numpy as np
    File "C:\Anaconda3\lib\site-packages\numpy\__init__.py", line 142, in &lt;module&gt;
      from . import add_newdocs
    File "C:\Anaconda3\lib\site-packages\numpy\add_newdocs.py", line 13, in &lt;module&gt;
      from numpy.lib import add_newdoc
    File "C:\Anaconda3\lib\site-packages\numpy\lib\__init__.py", line 8, in &lt;module&gt;
      from .type_check import *
    File "C:\Anaconda3\lib\site-packages\numpy\lib\type_check.py", line 11, in &lt;module&gt;
      import numpy.core.numeric as _nx
    File "C:\Anaconda3\lib\site-packages\numpy\core\__init__.py", line 26, in &lt;module&gt;
      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.
  </code></pre>
  
  <p>It looks like that I need to "reinstall" NumPy. I searched on the web, but I didn't find a way to "reinstall". There is only how to "install", and when I use</p>
  
  <pre><code>conda install numpy
  </code></pre>
  
  <p>in Anaconda Prompt I get:</p>
  
  <pre><code>Solving environment: done
  
  # All requested packages already installed.
  </code></pre>
  
  <p>And if I tried to remove NumPy to install it again, it will remove everything, not just NumPy. So do I really need to "reinstall" NumPy to be able to import <code>sklearn</code>?
  And if I do, how do I "reinstall" NumPy?</p>