如何在aws设备场中使用appium python截图运行?

即使在devicefarm中成功地执行了测试,我也会得到一个空的屏幕截图报告。我把代码保持如下的简单-

from appium import webdriver
import time
import unittest

import os

class MyAndroidTest(unittest.TestCase):
    def setUp(self):
        caps = {}
        self.driver = webdriver.Remote("http://127.0.0.1:4723/wd/hub", caps)
    def test1(self):
        self.driver.get('http://docs.aws.amazon.com/devicefarm/latest/developerguide/welcome.html')
        time.sleep(5)
        screenshot_folder = os.getenv('SCREENSHOT_PATH', '/tmp')
        self.driver.save_screenshot(screenshot_folder + 'screen1.png')
        time.sleep(5)

def tearDown(self):
        self.driver.quit()

if __name__ == '__main__':
        suite = unittest.TestLoader().loadTestsFromTestCase(MyAndroidTest)
        unittest.TextTestRunner(verbosity=2).run(suite)

我在一个设备池上测试过-

我该怎么做?

短暂性脑缺血发作