Python web页面上传文件并且判断系统本地是否存在

def ac_upgrade_local(self, version=None):
    """
    通过本地版本文件进行升级
    :param version: 需要升级的版本文件路径
    :return:
    """
    if version is not None:
        # 判断是否给出升级文件路径
        uti.tab_enter('utilities', 'system_upgrade')
        time.sleep(2)
        # 点击浏览标签
        element_upgrade = self.find_element(By.XPATH, x_uti_su_up_new_fir_ip)
        try:
            if os.path.exists(version) == True:
                # 判断升级文件路径中文件是否存在
                logging.info('The upgrade file path is:{}'.format(version))
                element_upgrade.send_keys(version)
            else:
                print('The upgrade file does not exist. Check the path information：{}'.format(version))
        except Exception as msg:
            logging.info('upgrade error.....msg:{}'.format(msg, traceback.format_exc()))

if __name__ == '__main__':
    logging.basicConfig(level='INFO')
    uti = Utilities()
    uti.login(username='admin', password='Accton123', language='English')
    # uti.tab_enter('utilities', 'system_upgrade')
    ftp_info = {
        'ftp_ip': '192.168.10.1',
        'ftp_port': '23',
        'ftp_username': 'admin',
        'ftp_password': 'Accton123'}
    uti.ac_upgrade_local(version=acmode_version_file)
#version=acmode_version_file为系统文件路径，取值为acmode_version_file = 'C:\\Users\\zhengyu_shang\\Desktop\\Edgecore_EWS5203_3.50.0019_en-zhcn_1.55.4.1-1.9839.2.28.rom'
#因为在Python中/有转义的作用，所以要给// 来表示，获取本身的意思