获取授权跳转地址

        :return: URL 地址

def authorize_url(self):
        """获取授权跳转地址

        :return: URL 地址
        """
        redirect_uri = quote(self.redirect_uri, safe=b'')
        url_list = [
            self.OAUTH_BASE_URL,
            'oauth2/authorize?appid=',
            self.app_id,
            '&redirect_uri=',
            redirect_uri,
            '&response_type=code&scope=',
            self.scope
        ]
        if self.state:
            url_list.extend(['&state=', self.state])
        url_list.append('#wechat_redirect')
        return ''.join(url_list)