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文章目錄

便捷地獲取網站中動態(tài)加載的數據

便捷實現(xiàn)模擬登陸

私下小編01即可獲取大量學習資料，電子書籍html分享到qq空間代碼，視頻教程源碼案例！

使用流程：

1.環(huán)境安裝：

pip install selenium

2.下載一個瀏覽器的驅動程序（谷歌瀏覽器）

3.實例化一個瀏覽器對象基本使用

代碼

from selenium import webdriver
from lxml import etree
from time import sleep
if __name__ == '__main__':
? ? bro = webdriver.Chrome(r"E:\google\Chrome\Application\chromedriver.exe")
? ? bro.get(url='http://scxk.nmpa.gov.cn:81/xk/')
? ? page_text = bro.page_source
? ? tree = etree.HTML(page_text)
? ? li_list = tree.xpath('//*[@id="gzlist"]/li')
? ? for li in li_list:
? ? ? ? name = li.xpath('./dl/@title')[0]
? ? ? ? print(name)

? ? sleep(5)
? ? bro.quit()

基于瀏覽器自動化的操作代碼

#編寫基于瀏覽器自動化的操作代碼

- 發(fā)起請求: get(url)

- 標簽定位: find系列的方法

- 標簽交互: send_ keys( 'xxx' )

- 執(zhí)行js程序: ('jsCod')

- 前進，后退: back(),( )

- 關閉瀏覽器: quit()1

代碼

https://www.taobao.com/
from selenium import webdriver
from time import sleep
bro = webdriver.Chrome(executable_path=r"E:\google\Chrome\Application\chromedriver.exe")
bro.get(url='https://www.taobao.com/')
#標簽定位
search_input = bro.find_element_by_id('q')
sleep(2)

#執(zhí)行一組js代碼，使得滾輪向下滑動
bro.execute_script('window.scrollTo(0,document.body.scrollHeight)')
sleep(2)
#標簽交互
search_input.send_keys('女裝')
button = bro.find_element_by_class_name('btn-search')
button.click()
bro.get('https://www.baidu.com')
sleep(2)
bro.back()
sleep(2)
bro.forward()
sleep(5)
bro.quit()

處理：

- 如果定位的標簽存在于標簽之中html分享到qq空間代碼，則必須使用.frame(id)

- 動作鏈(拖動) : from .

- 實例化一個動作鏈對象: = (bro)

- (div) :長按且點擊操作

- (x,y)

- ( )讓動作鏈立即執(zhí)行

- .( )釋放動作鏈對象

代碼

https://www.runoob.com/try/try.php?filename=jqueryui-api-droppable
from selenium import webdriver
from time import sleep
from selenium.webdriver import ActionChains
bro = webdriver.Chrome(executable_path=r"E:\google\Chrome\Application\chromedriver.exe")
bro.get('https://www.runoob.com/try/try.php?filename=jqueryui-api-droppable')
bro.switch_to.frame('iframeResult')
div = bro.find_element_by_id('draggable')
#動作鏈
action = ActionChains(bro)
action.click_and_hold(div)
for i in range(5):
? ? action.move_by_offset(17,0).perform()
? ? sleep(0.3)
#釋放動作鏈

action.release()
bro.quit()

模擬登陸QQ空間

代碼

https://qzone.qq.com/
from selenium import webdriver
from time import sleep
bro = webdriver.Chrome(executable_path=r"E:\google\Chrome\Application\chromedriver.exe")
bro.get('https://qzone.qq.com/')
bro.switch_to.frame("login_frame")
switcher = bro.find_element_by_id('switcher_plogin')
switcher.click()
user_tag = bro.find_element_by_id('u')
password_tag = bro.find_element_by_id('p')
user_tag.send_keys('1234455')
password_tag.send_keys('qwer123')
sleep(1)

but = bro.find_element_by_id('login_button')
but.click()

無頭瀏覽器和規(guī)避檢測

代碼

from ?selenium import webdriver
from time import sleep
#實現(xiàn)無可視化界面
from selenium.webdriver.chrome.options import Options
#實現(xiàn)規(guī)避檢測
from selenium.webdriver import ChromeOptions
#實現(xiàn)無可視化界面
chrome_options = Options()
chrome_options.add_argument('--headless')
chrome_options.add_argument('--disable-gpu')
#實現(xiàn)規(guī)避檢測
option = ChromeOptions()
option.add_experimental_option('excludeSwitches',['enable-automation'])
bro = webdriver.Chrome(executable_path=r"E:\google\Chrome\Application\chromedriver.exe",chrome_options=chrome_options,options=option)
bro.get('https://www.baidu.com')
print(bro.page_source)
sleep(2)
bro.quit()