用 python 写验证码的例子

import Image, ImageDraw, ImageFont, ImageFilter
import random

#letter
def rndChar():
return chr(random.randint(65, 90))

# color1
def rndColor():
return (random.randint(64, 255), random.randint(64, 255), random.randint(64, 255))

# color2:
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))
# make Font object:
font = ImageFont.truetype('Arial.ttf', 36)
# make Draw object:
draw = ImageDraw.Draw(image)
# fill pixels
for x in range(width):
for y in range(height):
draw.point((x, y), fill=rndColor())
# print letter
for t in range(4):#the show letter is 4
draw.text((60 * t + 10, 10), rndChar(), font=font, fill=rndColor2())
# blur
image = image.filter(ImageFilter.BLUR)
image.save('code.jpg', 'jpeg');
image.show()

#后添加汉子会出现报错如下：

but no encoding declared see http //python.org/dev/peps/pep-0263/ for details

解决方案：把#后面的数字变为英文就可以了。

for t in range(4):#the show letter is 4draw.text((60 * t + 10, 10), rndChar(), font=font, fill=rndColor2())