title: Unable to install pylint with pip in python 3.9
body: <p>I am starting to use VS Code, but pylint is not installed and it gives me an error.
  I try to install pylint using pip, but it gives me an error code.</p>
  <pre><code>Collecting pylint
    Using cached pylint-2.6.0-py3-none-any.whl (325 kB)
  Collecting astroid&lt;=2.5,&gt;=2.4.0
    Using cached astroid-2.4.2-py3-none-any.whl (213 kB)
  Collecting colorama
    Using cached colorama-0.4.4-py2.py3-none-any.whl (16 kB)
  Collecting isort&lt;6,&gt;=4.2.5
    Using cached isort-5.6.4-py3-none-any.whl (98 kB)
  Collecting lazy-object-proxy==1.4.*
    Using cached lazy-object-proxy-1.4.3.tar.gz (34 kB)
    Installing build dependencies ... done
    Getting requirements to build wheel ... done
      Preparing wheel metadata ... done
    WARNING: Requested lazy-object-proxy==1.4.* from https://files.pythonhosted.org/packages/07/3f/a3d687f83c7d44970f70ff0400677746c8860b11f0c08f6b4e07205f0cdc/lazy-object-proxy-1.4.3.tar.gz#sha256=f3900e8a5de27447acbf900b4750b0ddfd7ec1ea7fbaf11dfa911141bc522af0 (from astroid&lt;=2.5,&gt;=2.4.0-&gt;pylint), but installing version 0.0.0
  ERROR: Requested lazy-object-proxy==1.4.* from https://files.pythonhosted.org/packages/07/3f/a3d687f83c7d44970f70ff0400677746c8860b11f0c08f6b4e07205f0cdc/lazy-object-proxy-1.4.3.tar.gz#sha256=f3900e8a5de27447acbf900b4750b0ddfd7ec1ea7fbaf11dfa911141bc522af0 (from astroid&lt;=2.5,&gt;=2.4.0-&gt;pylint) has different version in metadata: '0.0.0'```
  </code></pre>