title: How to crop an image by using python-pptx after it inserted into slide?
body: <p>I've already insert an image into pptx by using python-pptx.</p>
  
  <p>My question is: How to CROP (Not adjust ratio) the image after it get inserted. 
  Let's say crop the top by 1 inch, and crop the bottom by 2 inchs.</p>
  
  <p>My original code as below. Would like to know how to modify the code based on my code? </p>
  
  <pre class="lang-py prettyprint-override"><code>from pptx import Presentation 
  from pptx.util import Inches
  
  img_paths = ['abc.png']
  
  
  prs = Presentation() 
  prs.slide_width = Inches(15)
  prs.slide_height = Inches(9)
  blank_slide_layout = prs.slide_layouts[0] 
  
  
  slide = prs.slides.add_slide(blank_slide_layout)
  
  
  left = Inches(0)
  top = Inches(1)
  pic = slide.shapes.add_picture(img, left, top, Inches(15))    
  
  
  prs.save('test.pptx')
  
  </code></pre>