python学习-转换物体颜色

# 将图片中红色物体全部转换为绿色from PIL import Imageimport osimport os.pathdir = 'C:\\Users\\ZS\\Desktop\\img'list = os.listdir(dir)for name in list:    img = Image.open(name)    for i in range(480):        for j in range(480):            r,g,b = img.getpixel((i,j))            if(r>g and r>b):                g = r                 r = 0                b = 0            img.putpixel((i, j),(r, g, b))    img.save(name)    img.show()# img.mode #查看图片格式# 'RGB'# img.size # 查看图片大小# (480, 480)