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我正在通过终端通过命令启动 appium 服务器，appium并在另一个终端中运行我的测试套件python test.py这工作正常。但是如果通过 python 脚本启动，我会在 2 个测试之间出现错误

def setup(self):
        subprocess.Popen('appium', shell=False)
        time.sleep(5)
        desired_caps = dict()
        desired_caps['platformName'] = 'Android'
        desired_caps['platformVersion'] = '6.0'
        desired_caps['deviceName'] = 'Android Emulator'
        desired_caps['app'] = os.path.abspath('test.apk')
        self.driver = webdriver.Remote('http://localhost:4723/wd/hub', desired_caps)
        return self.driver

错误：Couldn't start Appium REST http interface listener. Requested port is already in use. Please make sure there's no other instance of Appium running already.

错误没有影响测试仍然通过

我尝试在拆解中添加 killall 节点

def tearDown(self, driver):
    self.driver = driver
    self.driver.quit()
    subprocess.Popen('killall node', shell=False)

但它给了我错误

OSError: [Errno 2] No such file or directory

如何摆脱错误并停止 appium 服务器？

通过启动应用程序调用设置->单击一些按钮->通过关闭应用程序调用拆卸

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