selenium相关导入By、Keys、WebDriverWait、ActionChains,显示等待与隐式等待
# -*- coding: utf-8 -*- """ @author: Dell Created on Tue Dec 24 12:33:56 2019 """ import time from selenium import webdriver from selenium.webdriver.support.ui import WebDriverWait#等待一个元素加载完成 from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.common.by import By from selenium.webdriver.common.keys import Keys#键盘 from selenium.webdriver.common.action_chains import ActionChains#鼠标 driver= webdriver.Chrome() driver.get("http://www.baidu.com") driver.implicitly_wait(10)#控制操作的时间在10s以内,隐式等待,很少用 # driver.find_element_by_id("kw").send_keys("selenium") #打开一个网页,15s超时,每0.5s检测一次,直到id为kw的元素出现, #节约时间,显示等待15s,必须等待这个元素出现,若15s之后还没出现才会不等待了 WebDriverWait(driver, 15, 0.5).until(EC.presence_of_element_located((By.ID,"kw"))).send_keys("selenium")# driver.find_element_by_id("su").click()#点击百度一下进行搜索 nums_span = driver.find_element_by_class_name("nums_text") if nums_span.is_displayed():#判断这个元素是否已经显示出来 print(nums_span.text) time.sleep(5) driver.close() if __name__ == "__main__": pass
相关推荐
xiangxiaojun 2020-09-23
letheashura 2020-08-14
王练 2020-07-18
xiangxiaojun 2020-06-25
Feastaw 2020-06-18
云之高水之远 2020-06-14
Reiki 2020-06-12
songerxing 2020-06-11
王练 2020-06-11
tiankele0 2020-06-09
云之高水之远 2020-06-05
Reiki 2020-08-16
tiankele0 2020-07-29
curiousL 2020-07-18
tiankele0 2020-07-18
amei0 2020-07-08