title: “unresolved import 'requests'” but code can still run (VSCode)
body: <p>the code can run and debug
  but it shows"unresolved import 'requests'Python(unresolved-import)"
  is there any other settings what i missed?</p>
  
  <pre class="lang-py prettyprint-override"><code>import requests
  import os
  url = 'https://www.google.com'
  response = requests.get(url)
  response.encoding = 'utf-8'
  html = response.text
  path = os.path.abspath(os.path.dirname(__file__))+'\\test.txt'
  with open(path, 'w', encoding = 'gbk') as f:
      f.write(html)
  </code></pre>