用python生成随机4位验证码

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from PIL import Image, ImageDraw, ImageFont, ImageFilter

import random

def randNums():
    #随机字符
    return "a"

def randColor():
    #随机颜色
    return (random.randint(64,100), random.randint(64,100), random.randint(64,100))

def randColor2():
    #随机颜色2
    return (random.randint(32,127), random.randint(32,127), random.randint(32,127))

if __name__ == "__main__":
    #240 X 60
    width = 60*4
    height = 60
    image = Image.new('RGB', (width, height), (255, 255, 255))
    # with open("pic", "wb") as f:
    #     image.save(f, format="png")
    #create draw obj
    draw = ImageDraw.Draw(image)
    #define char color
    font = ImageFont.truetype('arial.ttf',size=36)
    for x in range(width):
        for y in range(height):
            draw.point((x, y), fill=randColor())

    for t in range(4):
        draw.text((60*t+10, 10), randNums(), fill=randColor2(),
                  font=font
                  )
    image.show()