python代码 构建验证码

1.python代码编写 （随机验证码）：

#coding: utf-8

import Image, ImageDraw, ImageFont, ImageFilter
import string, random

fontPath = "/home/itcast/ace/media/"

# 获得随机四个字母
def getRandomChar():
    return [random.choice(string.letters) for _ in range(4)]

# 获得颜色
def getRandomColor():
    return (random.randint(30, 100), random.randint(30, 100), random.randint(30, 100))

# 获得验证码图片
def getCodePiture():
    width = 240
    height = 60

    # 创建画布
    image = Image.new('RGB', (width, height), (180,180,180))
    font = ImageFont.truetype(fontPath + 'simhei.ttf', 80)
    draw = ImageDraw.Draw(image)

    # 创建验证码对象
    code = getRandomChar()#code-> [x,A,y,U] 

    # 把验证码放到画布上
    for t in range(4):
        draw.text((60 * t + 10, 0), code[t], font=font, fill=getRandomColor())

    # 填充噪点
    for _ in range(random.randint(1500,3000)):
        draw.point((random.randint(0,width), random.randint(0,height)), fill=getRandomColor())

    # 模糊处理
#image = image.filter(ImageFilter.BLUR)

    # 保存名字为验证码的图片
    #code = [x,y, U,a] --> xyUa.jpg
    image.save("".join(code) + '.jpg', 'jpeg');


if __name__ == '__main__':
    getCodePiture()