PIL参考手册

Python Imaging Library Handbook

http://effbot.org/imagingbook/pil-index.htm

随机验证码的产生

 import Image, ImageDraw, ImageFont, ImageFilter
 import random

 # 随机字母:
 def rndChar():
     return chr(random.randint(65, 90))

 # 随机颜色1:
 def rndColor():
     return (random.randint(64, 255), random.randint(64, 255), random.randint(64, 255))

 # 随机颜色2:
 def rndColor2():
     return (random.randint(32, 127), random.randint(32, 127), random.randint(32, 127))

 # 240 x 60:
 width = 60 * 4
 height = 60
 image = Image.new('RGB', (width, height), (255, 255, 255))
 # 创建Font对象:
 font = ImageFont.truetype('Arial.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())
 # 输出文字:
 for t in range(4):
     draw.text((60 * t + 10, 10), rndChar(), font=font, fill=rndColor2())
 # 模糊:
 image = image.filter(ImageFilter.BLUR)
 image.save('code.jpg', 'jpeg');