Complete daily mission then get the money.

def get_money(self):
        """Complete daily mission then get the money."""
        response = self.session.get(self.mission_url, verify=False)
        soup = BeautifulSoup(response.text, 'html.parser')
        onclick = soup.find('input', class_='super normal button')['onclick']
        url = onclick.split('=', 1)[1][2:-2]

        if url == '/balance':
            return "You have completed the mission today."
        else:
            headers = {'Referer': 'https://www.v2ex.com/mission/daily'}
            data = {'once': url.split('=')[-1]}
            self.session.get('https://www.v2ex.com'+url, verify=False,
                             headers=headers, data=data)
            balance = self._get_balance()
            return balance