class CaptchaController: def get(self): randomizer = Randomizer() pattern = randomizer.get_pattern() left = randomizer.get_number() operator = randomizer.get_operator() right = randomizer.get_number() self.captcha = Captcha(pattern, left, operator, right) def to_json(self): self.get() left = self.captcha.get_left() operator = self.captcha.get_operator() right = self.captcha.get_right() json = '{"left":"%s", "operator":"%s", "right":"%s"}' % (left, operator, right) return json