selenium元素和浏览器操作

click和clear

from selenium.webdriver.support.wait import WebDriverWait import time  browser = webdriver.Chrome() browser.get('https://www.baidu.cn/') wait = WebDriverWait(browser, 10)  input_tag = wait.until(EC.presence_of_element_located((By.ID, 'twotabsearchtextbox'))) input_tag.send_keys('iphone 8') button = browser.find_element_by_css_selector('#nav-search > form > div.nav-right > div > input') button.click() time.sleep(3)  input_tag = browser.find_element_by_id('twotabsearchtextbox') input_tag.clear()  # 清空输入框 input_tag.send_keys('iphone7plus') button = browser.find_element_by_css_selector('#nav-search > form > div.nav-right > div > input') button.click()

ActionChains

from selenium import webdriver from selenium.webdriver import ActionChains from selenium.webdriver.support.wait import WebDriverWait import time  driver = webdriver.Chrome() driver.get('http://www.runoob.com/try/try.php?filename=jqueryui-api-droppable') wait = WebDriverWait(driver, 3)  try:     driver.switch_to.frame('iframeResult')  # 切换到iframeResult     sourse = driver.find_element_by_id('draggable')     target = driver.find_element_by_id('droppable')      # 方式一：基于同一个动作链串行执行     # actions=ActionChains(driver) #拿到动作链对象     # actions.drag_and_drop(sourse,target) #把动作放到动作链中，准备串行执行     # actions.perform()      # 方式二：不同的动作链，每次移动的位移都不同     ActionChains(driver).click_and_hold(sourse).perform()     distance = target.location['x'] - sourse.location['x']      track = 0     while track < distance:         ActionChains(driver).move_by_offset(xoffset=2, yoffset=0).perform()         track += 2      ActionChains(driver).release().perform()      time.sleep(10)  finally:     driver.close()

自定义JS

from selenium import webdriver  try:     browser = webdriver.Chrome()     browser.get('https://www.baidu.com')     browser.execute_script('alert("hello world")')  # 打印警告 finally:     browser.close()

切换iframe

from selenium import webdriver  try:     browser = webdriver.Chrome()     browser.get('http://www.runoob.com/try/try.php?filename=jqueryui-api-droppable')      browser.switch_to.frame('iframeResult')  # 切换到id为iframeResult的frame      tag1 = browser.find_element_by_id('droppable')     print(tag1)      # tag2=browser.find_element_by_id('textareaCode') #报错，在子frame里无法查看到父frame的元素     browser.switch_to.parent_frame()  # 切回父frame,就可以查找到了     tag2 = browser.find_element_by_id('textareaCode')     print(tag2)  finally:     browser.close()

显示等待和隐式等待
- 隐式等待：在browser.get（'xxx'）前就设置，针对所有元素有效
```
browser.implicitly_wait(10)
```
- 显式等待：在browser.get（'xxx'）之后设置，只针对某个元素有效
```
from selenium.webdriver.support.wait import WebDriverWait wait=WebDriverWait(browser,10) wait.until(EC.presence_of_element_located((By.ID,'content_left')))
```
获取标签属性

from selenium import webdriver from selenium.webdriver.common.by import By from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.support.wait import WebDriverWait  browser = webdriver.Chrome() browser.get('https://www.amazon.cn/')  wait = WebDriverWait(browser, 10) wait.until(EC.presence_of_element_located((By.ID, 'cc-lm-tcgShowImgContainer'))) tag = browser.find_element(By.CSS_SELECTOR, '#cc-lm-tcgShowImgContainer img')  # 获取标签属性， print(tag.get_attribute('src'))  # 获取标签ID，位置，名称，大小 print(tag.id) print(tag.location) print(tag.tag_name) print(tag.size)  browser.close()

浏览器前进后退

browser.back() browser.forward()

from selenium import webdriver  browser=webdriver.Chrome() browser.get('https://www.zhihu.com/explore') print(browser.get_cookies()) browser.add_cookie({'k1':'xxx','k2':'yyy'}) print(browser.get_cookies())  # browser.delete_all_cookies()

切换选项卡

import time from selenium import webdriver  browser=webdriver.Chrome() browser.get('https://www.baidu.com') browser.execute_script('window.open()')  print(browser.window_handles) #获取所有的选项卡 browser.switch_to_window(browser.window_handles[1]) browser.get('https://www.taobao.com') time.sleep(10) browser.switch_to_window(browser.window_handles[0]) browser.get('https://www.sina.com.cn') browser.close()

异常处理

from selenium import webdriver from selenium.common.exceptions import TimeoutException,NoSuchElementException,NoSuchFrameException  try:     browser=webdriver.Chrome()     browser.get('http://www.runoob.com/try/try.php?filename=jqueryui-api-droppable')     browser.switch_to.frame('iframssseResult')  except TimeoutException as e:     print(e) except NoSuchFrameException as e:     print(e) finally:     browser.close()

来源：博客园

作者：日新其德止于至善

链接：https://www.cnblogs.com/iamluoli/p/11528714.html

标签

selenium

webdriver

wait