python中类的使用

-------------------------------
from appium import webdriver

#创建类
class appium_setting():
    #添加构建函数，定义变量
    def __init__(self,platformName,platformVersion,deviceName,appPackage,appActivity):
        self.platformName = platformName
        self.platformVersion = platformVersion
        self.deviceName = deviceName
        self.appPackage = appPackage
        self.appActivity = appActivity
    #定义方法
    def desired_setting(self):
        desired_caps = {}
        desired_caps['platformName'] = self.platformName
        desired_caps['platformVersion'] = self.platformVersion
        desired_caps['deviceName'] = self.deviceName
        desired_caps['appPackage'] = self.appPackage
        desired_caps['appActivity'] = self.appActivity
        #desired_caps['automationName'] = 'UiAutomator1'
        desired_caps['unicodeKeyboard'] = True
        desired_caps['resetKeyboard'] = True
        driver = webdriver.Remote('http://localhost:4723/wd/hub', desired_caps)
        return  driver
#实力化类
t = appium_setting('Android','10','EML-AL00_CLB0219309006069','com.mlearning.hrtob','com.pingan.hrx.login.activity.LoginActivity')
#类办法的使用
t.desired_setting()

------------------------------------------
#类定义 
class people: 
    #定义基本属性 
    name = '' 
    age = 0 
    #定义私有属性,私有属性在类外部无法直接进行访问 
    __weight = 0
    #定义构造方法 
    def __init__(self,n,a,w): 
        self.name = n 
        self.age = a 
        self.__weight = w 
    def speak(self): 
        print("%s 说: 我 %d 岁。" %(self.name,self.age)) 
    #单继承示例 
    class student(people): 
       grade = '' 
       def __init__(self,n,a,w,g): 
           #调用父类的构函 
           people.__init__(self,n,a,w) 
           self.grade = g #覆写父类的方法 
       def speak(self): 
           print("%s 说: 我 %d 岁了，我在读 %d 年级"%(self.name,self.age,self.grade)) 
s = student('ken',10,60,3) 
s.speak()