利用PIL生成随机验证码

import os
from django.test import TestCase
from django.conf import settings
from PIL import Image, ImageDraw, ImageFont, ImageFilter
import random
# 随机字符 chr转成ASCII字符，这里设置的范围是A-Z
def rnd():
    return chr(random.randint(65,90))
#随机颜色,这里采用的RGB的模式，当然也可以才ARGB的模式
def rndColor():
    return (random.randint(64,255),random.randint(64,255),random.randint(64,255))
# 再定义一种随机颜色
def rndColor2()
    return (random.randint(32,127),random.randint(32,127),random.randint(32,127))
# 定义下将要显示的图片的大小
width = 60*4
height = 60
image = Image.new("RGB",(width,height),(255,255,255))
#创建Font对象
font = ImageFont.truetype('VerasSe.ttf', 36)
# 创建Draw对象
draw = ImageDraw.Draw(image)
#填充每个像素
for x in  range(width):
    for y in range(height):
    draw.point((x,y),fill=rndColor())

#在image上显示文字
for t in range(4):
    drawText((60*t+10,10),rndChar(), font=font,fill=rndColor2())
#让图片变的模糊
image = image.filter(ImageFilter.BLUR)
image.save('test.jpg', 'JPEG')