Easily convert a JPEG image file to an ASCII text file

jpeg-to-ascii.py

from PIL import Image
from bisect import bisect


def main():

    gray_scale = {
        8: '@',
        7: '#',
        6: '£',
        5: '=',
        4: '+',
        3: '|',
        2: ':',
        1: '.',
        0: ' ',
    }

    bounds = [
        32, 64, 96, 128, 160, 192, 224
    ]

    scale = 1  # Defined here to tmake pixel scale

    jpeg = Image.open('input.jpg')
    jpeg.convert(mode='L')
    loaded_jpg = jpeg.load()
    txt = ""
    file_name = "out.txt"

    w = jpeg.size[0]
    h = jpeg.size[1]

    with open(file_name, 'w') as file:
        for i in range(0, h):
            if i % scale == 0:
                for j in range(0, w):
                    if j % scale == 0:
                        brightness = loaded_jpg[j, i]
                        brightness = 250 - brightness[0]
                        index = bisect(bounds, brightness)
                        char = gray_scale[index]
                        txt = "{}{}".format(txt, char)

                txt = "{}\n".format(txt)
        file.write(txt)


if __name__ == '__main__':
    main()