title: not able to activate the python virtual env vscode
body: <p>I have my python <code>3.8</code> and <code>3.7</code> installed on my system. <code>Python3.8</code> as active by default. Now I had created the python venv using following command with <code>python3.7</code></p>
  <pre><code>virtualenv --python=C:\Users\sgarg\AppData\Local\Programs\Python\Python37\python.exe env37
  </code></pre>
  <p>and it created the the new virtual environment with python 3.7.</p>
  <p>Now all of sudden when I try to activate this env in vscode, it does not activate this environment. But it shows (env37) in the terminal.</p>
  <p>If I check the python version inside the <code>env37/Scripts/python.exe</code> it shows the version <code>3.7</code>, but outside this directory it shows version <code>3.8</code>.</p>
  <p>I checked the <code>env37/pyenv.cfg</code> it shows</p>
  <pre><code>home = C:\Users\sgarg\AppData\Local\Programs\Python\Python37
  implementation = CPython
  version_info = 3.7.0.final.0
  virtualenv = 20.4.2
  include-system-site-packages = false
  base-prefix = C:\Users\sgarg\AppData\Local\Programs\Python\Python37
  base-exec-prefix = C:\Users\sgarg\AppData\Local\Programs\Python\Python37
  base-executable = C:\Users\sgarg\AppData\Local\Programs\Python\Python37\python.exe
  </code></pre>
  <p>I tried selecting the manual interpreter by pressing <code>Ctrl + Shift + P</code>, then browsed the path of /env/Scripts/python.exe</p>
  <p>that did not work even.</p>
  <p>I tried creating new environment, for that everything is working fine. But what is the issue with existing environment?</p>