title: How could i save all the hashes generated from jpg images into a csv file and not only the last one?
body: <pre><code>import imagehash
  from PIL import Image
  import glob
  import numpy as np
  
  image_list = []
  for filename in glob.glob('/home/folder/*.jpg'):
      im=Image.open(filename)
      image_list.append(im)
      hash = imagehash.average_hash(im)
      print(hash)
      list_rows = [[hash]]
      np.savetxt(&quot;numpy_test.csv&quot;, list_rows, delimiter=&quot;,&quot;, fmt='% s')
  </code></pre>
  <blockquote>
  <p>how to save all the hashes generated into the same csv file and not only the last one</p>
  </blockquote>