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 webdriver
from selenium.webdriver.common.action_chains import ActionChains
from time import sleep

driver = 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 webdriver
from selenium.webdriver.common.keys import Keys
from time import sleep

driver = 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+a
driver.find_element_by_css_selector("#kw").send_keys(Keys.CONTROL,"a")
sleep(1)
#启用键盘ctrl+c
driver.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  webdriver
from  selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import  expected_conditions as ES
from selenium.webdriver.common.by import By
from time import  sleep
driver = 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  webdriver
from  selenium.common.exceptions import NoSuchElementException
from time import sleep,ctime
driver =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())