Appium 自动化框架代码疑惑点

定位元素的一种用法
from selenium.webdriver.common.by import By

driver.find_element("id", "kw")
driver.find_element("xpath", "xxx")
driver.find_element("link text", "xxx")
driver.find_element("partial link text", "xxx")
driver.find_element("name", "xxx")
driver.find_element("tag name", "xxx")
driver.find_element("class name", "xxx")
driver.find_element("css selector", "xxx")

def is_exist(self,locator,timeout=30,frequency=0.5):
        """
        locator 参数是定位方式，如("id", "kw"),把两个参数合并为一个
        *号是把两个参数分开传值
         使用方法：
        locator = ("id", "kw")
        driver.find_element(*locator)

class BasePage:
    """页面基类"""
    def __init__(self,driver): #构造函数
        self.driver = driver


    def openpage(self,url):
        """ 打开页面"""
        self.driver.get(url)
        self.driver.implicitly_wait(10) #隐式等待默认时间
        self.driver.maximize_window() #最大化窗口


    def getelement(self,*locator):
        """获取页面元素"""
        return self.driver.find_element(*locator)


    def getelements(self,*locator):
        """获取页面元素集"""
        return self.driver.find_elements(*locator)


------------------------------------------------------------------------------------------------------------------------