python+selenium元素定位

from selenium import webdriver
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.select import Select
from selenium.webdriver.common.action_chains import ActionChains
from selenium.common.exceptions import ElementNotVisibleException
from selenium.common.exceptions import TimeoutException

'''封装selenium基本操作'''
class LocatorTypeError(Exception):
    pass
class ElementNotFound(Exception):
    pass
class Base():
    '''基于原声的 selenium做二次封装'''
    def __init__(self,driver:webdriver.Chrome,timeout=20,t=0.5):
        self.driver = driver
        self.timeout = timeout
        self.t = t
    def find(self,locator):
        '''定位到元素，返回元素对象，没有定位到，Timeout异常'''
        if not isinstance(locator,tuple):
            raise LocatorTypeError('参数类型错误，locator必须是元祖类型 loc=("id","value1")')
        else:
            print("正在定位元素信息：定位方式->%s,value值->%s" %(locator[0],locator[1]))
            try:
                # ele=WebDriverWait(self.driver,self.timeout,self.t).until(EC.presence_of_element_located(locator))
                ele = WebDriverWait(self.driver, self.timeout, self.t).until(EC.presence_of_element_located(locator))
            except TimeoutException as msg:
                raise ElementNotFound('定位元素出现超时！！！')
            return ele
    def finds(self,locator):
        '''复数定位，返回elements对象'''
        if not isinstance(locator,tuple):
            raise  LocatorTypeError('参数类型错误，locator必须是元祖')
        else:
            print("正在定位元素信息")
            eles=WebDriverWait(self.driver,self.timeout,self.t)
            return eles