第二十九节 selenium隐式和显式等待

from selenium import webdriver
from selenium.webdriver.chrome.options import Options


browers_path = r'C:UsersAdministratorAppDataLocal360ChromeChromeApplication360chrome.exe'
chrome_option = Options()
chrome_option.binary_location = browers_path
browers_driver = webdriver.Chrome(options=chrome_option)
browers_driver.get("http://www.baidu.com")

'''
隐式等待
会等待指定时间，不管这个元素有没有刷新或者获取到
'''
# browers_driver.implicitly_wait(20)
# browers_driver.find_element_by_id('12342435')

'''
显式等待:如果在限定条件下去到了元素就会结束程序，否则会等到规定限定时间抛出错误
'''
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
#
elment = WebDriverWait(browers_driver,10).until(
    EC.presence_of_element_located((By.NAME,'wd'))#只能传一个参数，因此要放进一个元组中
)

print(elment)