title: Python PIL/Image make 3x3 Grid from sequence Images
body: <p>I'm trying to make a 3x3 Grid by sequence images but can't seem to get it right. The images are in folder, named from 0 - 8 (total 9 images), the output of the final one image grid of 3x3 should as follow</p>
  
  <pre><code>image0 image1 image2
  image3 image4 image5
  image6 image7 image8 
  </code></pre>
  
  <p>I was trying to follow <a href="https://stackoverflow.com/questions/10647311/how-do-you-merge-images-using-pil-pillow">How do you merge images into a canvas using PIL/Pillow?</a> but couldn't get it work correctly. </p>
  
  <p>There are no need to change anything in the image, just merge them and make a 3x3 Grid </p>