python 将图片文字化展示

from PIL import Image
import argparse

parser = argparse.ArgumentParser()
parser.add_argument('file')     #输入文件
parser.add_argument('-o', '--output')   #输出文件
parser.add_argument('--width', type = int, default = 80) #输出字符画宽
parser.add_argument('--height', type = int, default = 80) #输出字符画高

args = parser.parse_args()

IMG = args.file
WIDTH = args.width
HEIGHT = args.height
OUTPUT = args.output
ascii_char = list("$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. ")

def get_char(r, g, b, alpha = 256):
    if alpha == 0:
        return ' '
    length = len(ascii_char)
    gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b)

    unit = (256.0 + 1) / length
    return ascii_char[int(gray / unit)]

if __name__ == '__main__':

    im = Image.open(IMG)
    im = im.resize((WIDTH, HEIGHT), Image.NEAREST)


    txt = ''

    for i in range(HEIGHT):
        for j in range(WIDTH):
            txt += get_char(*im.getpixel((j, i)))
        txt += '\n'
    print(txt)

调用的时候 在执行命令后边加上图片