from  appium import webdriver
from time import *
desired_caps={ -----desired_caps为自定义变量名
    'platformName':'Android',
'platformVersion':'5.1.1',
'deviceName':'127.0.0.1:62025',
'appPackage':'com.jianshu.haruki',
'appActivity':'com.baiji.jianshu.account.LoginActivity'
}
dr=webdriver.Remote('http://127.0.0.1:4723/wd/hub',desired_caps)
#dr.implicitly_wait(120)
sleep(5)
dr.close_app() ----为关闭app