captcha

gistfile1.py

# coding: utf-8

from PIL import Image, ImageDraw, ImageFont
from random import randint, choice
import StringIO, string

def captcha():
    key = ''.join( [choice(string.ascii_lowercase + string.digits) for i in xrange(5)] )
    
    img = Image.new('RGB', (100,30), 0xffffff )
    draw = ImageDraw.Draw(img)
    
    for i in xrange(40):
        draw.line( [(randint(0,100),randint(0,30)),(randint(0,100),randint(0,30))], randint(0, 0xffffff), 1)
    
    font = ImageFont.truetype('/usr/share/fonts/truetype/freefont/FreeMono.ttf', 32)
    draw.text( (0,0), key, 0, font)
    
    f = StringIO.StringIO()
    img.save(f, "JPEG")
    raw = f.getvalue()
    
    return key,raw

#@get('/captcha')
#@app.route('/captcha')
def retcapcha():
    key, raw = captcha()
    response.set_cookie('capcha_hash', hash(key))
    db.save(key)
    response.headers['Content-Type'] = 'image/jpeg'
    return key


if __name__ == '__main__':
    print captcha

great!