python_selenium（三）

实现思路
 
需要引入ActionChains类 
然后定位相关元素 
在ActionChains().调用相关鼠标操作方法
from selenium import webdriverfrom selenium.webdriver.common.action_chains import ActionChainsfrom time import sleepdriver = webdriver.Chrome()driver.get("http://www.baidu.com")element_id_kw = driver.find_element_by_id("kw")element_id_kw.send_keys("python")sleep(2)#双击告诉那个电脑那个文本框双击ActionChains(driver).double_click(element_id_kw).perform()#右键ActionChains(driver).context_click(element_id_kw).perform()sleep(2)#鼠标悬停element_name_t = driver.find_element_by_name("tj_settingicon")ActionChains(driver).move_to_element(element_name_t).perform()
键盘操作
案例：在百度搜索关键词“Python” 然后将关键词复制或剪切到搜狗搜索框进行搜索

from selenium import webdriverfrom selenium.webdriver.common.keys import Keysfrom time import sleepdriver = webdriver.Chrome()driver.get("http://www.baidu.com")#在输入框输入内容driver.find_element_by_css_selector("#kw").send_keys("把内容剪切")sleep(1)#启用键盘ctrl+adriver.find_element_by_css_selector("#kw").send_keys(Keys.CONTROL,"a")sleep(1)#启用键盘ctrl+cdriver.find_element_by_css_selector("#kw").send_keys(Keys.CONTROL,"x")sleep(1)#启用键盘打开搜狗ctrl+v 黏贴内容driver.get("http://www.sogou.com/")driver.find_element_by_css_selector(".sec-input").send_keys(Keys.CONTROL,"v")

显示等待
案例：检测百度页面搜索按钮是否存在，存在就输入关键词“自学网 Selenium” 然后点击搜索
from selenium import  webdriverfrom  selenium.webdriver.support.ui import WebDriverWaitfrom selenium.webdriver.support import  expected_conditions as ESfrom selenium.webdriver.common.by import Byfrom time import  sleepdriver = webdriver.Chrome()driver.get("http://www.baidu.com")#输入实验driver.find_element_by_id("kw").send_keys("实验")#等待五秒，直到搜索到ID 为su 属性element = WebDriverWait(driver,5,0.5).until(ES.presence_of_element_located((By.ID,'su')))element.click()

隐式等待：
from selenium import  webdriverfrom  selenium.common.exceptions import NoSuchElementExceptionfrom time import sleep,ctimedriver =webdriver.Chrome()driver.get("http://www.baidu.com")sleep(2)driver.implicitly_wait(5)try:    print(ctime())    driver.find_element_by_css_selector("#kw").send_keys("Python")    driver.find_element_by_css_selector("#su").click()except NoSuchElementException as msg :    print(msg)finally:    print(ctime())