python selenium启动常用

加载超时设置
browser.set_page_load_timeout(5)

# 二进制转16进制
a ='00000000'
hex(int(a, 2))


from selenium import webdriver
import time
from selenium.webdriver.common.action_chains import ActionChains
import re
from selenium.webdriver.common.keys import Keys
from bs4 import BeautifulSoup as bs
import pickle

options = webdriver.ChromeOptions()
options.add_experimental_option("excludeSwitches",["enable-logging"])
browser = webdriver.Chrome(options=options)
#browser = webdriver.Chrome()
#Chrome浏览器驱动
js='window.open("https://www.baidu.com");'
browser.execute_script(js)
browser.get('https://www.taobao.com/')
#打开网页
def dian(s,w):
    xx = browser.find_elements_by_css_selector(s)
    for i in xx:
        if w == i.text:
            print(i.text)
            i.click()
            time.sleep(1)
            break
        else:
            pass
handles = browser.window_handles
browser.switch_to.window(handles[0])

js="var q=document.getElementById('id').scrollTop=10000"
browser.execute_script(js）
js="var q=document.documentElement.scrollTop=100"
browser.execute_script(js)

js ='myVid=document.querySelector("video");alert(myVid.duration);'# 这里是获取第一个video标签
browser.execute_script(js)
#取得一个视频长度
js ='myVid=document.getElementById("videoSource");alert(myVid.duration);'
browser.execute_script(js)
try:
    alert = browser.switch_to.alert
    con = alert.text
    print(con)
    t = int(float(con)/60)+1
    print(t)
    alert.accept()
except:
    t =30

js = "var q=document.getElementsByClassName('content')[0].scrollTop = 10000"
#可指定元素滑动
def c():
    bo = browser.find_element_by_xpath('//*[@id="task-content-iframe"]')
    browser.switch_to.frame(bo)
    browser.switch_to.default_content()
    html = bo.get_attribute('innerHTML')
    js ='videoList(10108325)'
    browser.execute_script(ji)
    try:
        alert = browser.switch_to.alert
        con = alert.text
        print(con)
        alert.accept()
    except:
        pass

#元素截图
s = browser.find_element_by_id('safecode')
 s.screenshot('1.png')
#。。。。。。。。。。。。。。。。。。。。。。。。。。。

def c():
    #滑动元素
    for i in range(1):
        
        browser.switch_to.default_content()
        bo = browser.find_element_by_id('baxia-dialog-content')
        browser.switch_to.frame(bo)
        d = browser.find_element_by_id('nc_1_n1z')
        ActionChains(browser).click_and_hold(d).perform()
        
        xx= 300
        while xx>0:
            x = random.randint(50,80)
            xx =xx-x
            print(x)
            ActionChains(browser).move_by_offset(xoffset=x, yoffset=0).perform()

        ActionChains(browser).release(d).perform()

# selenium 4.0 
#id
x = browser.find_element(By.ID, 'kw') #id

#name
x = browser.find_element(By.NAME, 'wd') #id

#class
x = browser.find_element(By.CLASS_NAME, 'cos-pc') #id

#TAG p div span ul li
x = browser.find_element(By.TAG_NAME, 'body') #id

#By.LINK_TEXT表示全部匹配linktext定位找到元素
x = browser.find_element(By.LINK_TEXT, '百度首页') #id

#By.PARTIAL_LINK_TEXT表示模糊匹配linktext定位找到元素 
x = browser.find_element(By.PARTIAL_LINK_TEXT, '百度首页')

x = browser.execute_script(js)

def ma():

    def sss():
        import ddddocr
        ocr = ddddocr.DdddOcr()
        with open('1.png', 'rb') as f:
            img_bytes = f.read()
        res = ocr.classification(img_bytes)
        #print(res)
        return res

    for i in range(10):
        u = browser.find_element_by_id('checkcode')#验证码
        u.screenshot('1.png')
        m = sss()
        print(m)

        if len(m)==4:
            return m
        else:
            u.click()
            time.sleep(1)
            

def deng():

    for i in range(1):
        n = ''
        m =''

        browser.get('http://lzjtu.lllnet.cn/')
        time.sleep(5)
        nn =browser.find_element_by_id('loginName')
        mm = browser.find_element_by_id('password')
        num = browser.find_element_by_id('randNum')

        nn.clear()
        mm.clear()
        num.clear()

        a = ma()
        
        nn.send_keys(n)
        mm.send_keys(m)
        num.send_keys(a)

        time.sleep(1)
        browser.find_element_by_class_name('l_btn1').click()
        time.sleep(5)

chromedriver驱动下载地址：
最新下载链接：https://googlechromelabs.github.io/chrome-for-testing/

http://chromedriver.storage.googleapis.com/index.html

国内镜像：https://registry.npmmirror.com/binary.html?path=chromedriver/

同时提供geckodriver和iedriverserver的下载地址：

geckodriver：

https://github.com/mozilla/geckodriver/releases

iedriverserver：

http://selenium-release.storage.googleapis.com/index.html
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