1.配置多设备参数：

import multiprocessing

class A(unittest.TestCase):
    def android_devices(self, udid, port,systemPort):
        capabilities = {
            "platformName": "Android",
            "udid": udid,
            "deviceName": "WCGEL7U899999999",
            "appPackage": ‘com.xxxxxx.activities‘,
            "systemPort": systemPort,
            "appActivity": ‘com.xxxxxx.activities.activity.init.InitActivity‘,
            "noReset": True
        }
        driver = webdriver.Remote("http://127.0.0.1:"+str(port)+"/wd/hub", capabilities)

备注：一定要加udid和systemPort这两个参数，要不然就算启动了两个设备也只有一台设备在跑测试用例。
2.确保当前端口号没有被占用：

def kill_server(self):
    server_list = os.popen(‘tasklist | find "node.exe"‘).readlines()
    if len(server_list) > 0:
        os.system("taskkill -F -PID node.exe")
3.同时启动多个Appium服务：

def start_appium_server(self, port,devices):
    bootstrip = port + 1
    os.system("appium -a 127.0.0.1" + " -p " + str(port) + " -bp " + str(bootstrip) + " -U "+str(devices)+" --no-reset")
备注：bootstrip是Appium Server的中间件，bootstrip的端口号是Appium Server的端口号+1

        

        4.导入多进程multiprocessing模块，通过Process方法同时启动多台服务并启动设备：
    

if __name__ == ‘__main__‘:
    desired_list = []
    devices_list = ["127.0.0.1:62001", "127.0.0.1:62025"]
    a= A()
    a.kill_server()
    for j in range(len(devices_list)):
        server_port = 4723 + j * 2
        th = multiprocessing.Process(target=a.start_appium_server, args=(server_port, devices_list[j]))
        th.start()
    for i in range(len(devices_list)):
        port = 4723 + i * 2
        systemPort = 8200 + i
        t = multiprocessing.Process(target=a.android_devices, args=(devices_list[i], port, systemPort))
        t.start()

原文：https://www.cnblogs.com/keqing1108/p/12048187.html