title: run python cells in vscode
body: <p>I would like to run python cells with vscode. </p>
  
  <p>For example:</p>
  
  <pre><code>#%%
  import numpy as np
  import os
  from PIL import Image
  from sklearn.metrics import precision_recall_curve
  
  from tqdm import tqdm
  
  import matplotlib.pyplot as plt
  plt.style.use('seaborn')
  </code></pre>
  
  <p>I put <code>#%%</code> before the codes. However, when I click "run cell", there is no result come out, but just one error: <strong>({"message": "'_xsrf' argument missing from POST", "reason": null})</strong></p>
  
  <p><a href="https://i.stack.imgur.com/eRKU2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eRKU2.png" alt="enter image description here"></a></p>
  
  <p>Does anyone know how to solve this problem?</p>
  
  <p>Thank you.</p>