Image comment edition with piexif (example)

exif.py

import piexif

def set_desc(imgPath, message):
    exif_dict = piexif.load(imgPath)
    exif_dict['0th'][40092] = string_to_array(message)
    exif_bytes = piexif.dump(exif_dict)
    piexif.insert(exif_bytes, imgPath)
    return 1

def string_to_array(string):
    stringArray = list(string)
    asciiArray = ()
    for letter in stringArray:
        asciiArray = asciiArray + (ord(letter), 0)
    asciiArray = asciiArray + (0, 0)
    return asciiArray

#EXAMPLE: set_desc('e.jpg', 'hello bro')