basepage 页，对元素定位与显示等待的封装

#元素定位与显示等待结合
    def locator(self,loc):
        ele = self.driver.find_element(loc)
        try:
            WebDriverWait(self.driver,timeout=10).until(EC.visibility_of_element_located(ele))
            return ele
        except Exception:
            raise
    #输入
    def input(self,loc,txt):
        self.locator(loc).send_keys(txt)

页面对象的元素定位，与操作方法

class Input(Page):
    url = "https://www.baidu.com"
    input_loc = (By.ID,'kw')

    def send_keys(self,txt):
        self.open(self.url)
        self.input(self.input_loc,txt)