title: Unable to use matplotlib after installation "no module named 'matplotlib'"
body: <p>I am brand new to Python and am following the tutorial at this link:
  <a href="https://code.visualstudio.com/docs/python/python-tutorial" rel="nofollow noreferrer">https://code.visualstudio.com/docs/python/python-tutorial</a></p>
  <p>I was able to execute</p>
  <pre><code>python -m pip install matplotlib
  </code></pre>
  <p>However, then when trying to run script:</p>
  <pre><code>import matplotlib.pyplot as plt
  import numpy as np
  
  x = np.linspace(0, 20, 100)
  plt.plot(x, np.sin(x))
  plt.show()
  </code></pre>
  <p>I get:</p>
  <pre><code>PS C:\Code\Astros\Prism&gt; &amp; C:/Users/USER/AppData/Local/Programs/Python/Python38/python.exe c:/Code/Astros/Prism/Prism.py
  Traceback (most recent call last):
    File &quot;c:/Code/Astros/Prism/Prism.py&quot;, line 1, in &lt;module&gt;
      import matplotlib.pyplot as plt
  ModuleNotFoundError: No module named 'matplotlib'
  PS C:\Code\Astros\Prism&gt; 
  </code></pre>
  <p>Any guidance would be much appreciated.</p>