title: imported file in Python cannot find its own imported file
body: <p>The imported file cannot locate its own import file</p>
  <p>In main.py:</p>
  <pre><code>from subfolder import get_data
  </code></pre>
  <p>In subfolder\get_data.py:</p>
  <pre><code>import get_info #in subfoler
  
  ModuleNotFoundError: No module named 'get_info'
  </code></pre>
  <p>How to solve this problem?</p>
  <p>Thank you.</p>