# -- coding: utf-8 --
from PIL import Image
import argparse

WIDTH = 90
HEIGHT = 45


ascii_char = list("@#&$*ox!i;.")


def get_char(r, g, b, alpha=256):
    if alpha == 0:
        return ‘ ‘
    length = len(ascii_char)
    gray = int(0.299 * r + 0.578 * g + 0.114 * b)

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


if __name__ == ‘__main__‘:

    im = Image.open(‘ccc.jpg‘)
    scale = max(im.size[0] / WIDTH, im.size[1] / HEIGHT)
    WIDTH = im.size[0] / scale * 2
    HEIGHT = im.size[1] / scale
    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)))  # 读取(j,i)像素点的r,g,b,alpha值用于计算灰度
        txt += ‘\n‘  # 打印完一行后换行

    # 字符画输出到文件
    with open("output.txt", ‘w‘) as f:
        f.write(txt)