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()