python实现趣味图片字符化

#coding=utf-8from PIL import Image ascii_char = list('MW$#@%&KERTYOJKLUIC{}*mnxgouic()<>/!~:;^・.') def get_char(r,b,g,alpha = 256):  if alpha==0:    return ' '  gray = int(0.2126 * r + 0.7152 * g + 0.0722 *b)  unit = 256 / len(ascii_char)  return ascii_char[int(gray/unit)] def main():    chage_image=input("请输入待转化照片的名字")  im = Image.open(chage_image)   width, height = im.width,im.height  #im = im.resize((width,height))  txt = ""         #存放待写入的字符 使用NotePad+ 缩放观看  for i in range(height):    for j in range(width):      txt += get_char(*im.getpixel((j, i)))    txt += '/n'      input_file_name = chage_image[:-4]+".txt"  print(input_file_name)  with open(input_file_name,"w") as f:    f.write(txt)  print (input_file_name[:-4],"制作完成！")  if "__name__" =="__main__":  main()