def returnColors():
                                                            |just assigning the variables
  img = Image.open(src).load()                              |
  cList = []

  for o in range(Image.open(src).size[1]):                  |iterates through the image
    for i in range(Image.open(src).size[0]):                |appending color data to cList
      cList.append(img[i, o])                               |

  lSize = len(cList)

  print("The source image is equal to", lSize, "px.")       |Here's the important bit
  print("")                                                 |
  command=input('''  What would you like to do? You can say:|
                                                            |
  get all                                                   |
  get unique                                                |
                                                            |
  ''')                                                      |

The source image is equal to 512 px.

  What would you like to do? You can say...

    get all
    get unique