title: How to upload images (.jpeg, .jpg) in a python code as a dataframe
body: <p>I have a file composed of 5 files (categories), each containing 100 pictures (.JPEG and .JPG). What is the best way to upload this data in a dataframe that will be lately fed to a Convolutional Neural Network. How can I set up features and target properly?</p>
  <p>And also, does the size of the file matter?</p>