selenium 3.141.0

pip install selenium

from selenium import webdriver

from selenium.webdriver.common.by import By

from selenium.webdriver import ActionChains

from selenium.webdriver.common.keys import Keys

from selenium.webdriver.support.ui import WebDriverWait

from selenium.webdriver.support import expected_conditions as EC

CHROME_DRIVER = r'D:\software\anaconda3\Scripts\chromedriver.exe'

chrome_options = webdriver.ChromeOptions()

# 设置 屏幕大小

chrome_options.add_argument("window-size=1366,768")

# chrome_options.add_argument('--headless')

chrome_options.add_argument("-no-sandbox")

# chrome_options.add_argument("--disable-dev-shm-usage")

chrome_options.add_experimental_option('excludeSwitches', ['enable-automation'])  

chrome_options.add_experimental_option('prefs', {

    "download.default_directory": config.wgbgd_save,

    "download.prompt_for_download": False,

    "download.directory_upgrade": True,

    "plugins.always_open_pdf_externally": True  

})

driver = webdriver.Chrome(CHROME_DRIVER, chrome_options=chrome_options)

wait = WebDriverWait(driver, 40)

# 等待

wait.until(EC.presence_of_element_located((By.ID, 'cardLogin')))

wait.until(EC.element_to_be_clickable((By.ID, 'cusAdvancedQuery')))

# 等待页面所有元素加载完成

wait.until(EC.presence_of_all_elements_located((By.CSS_SELECTOR, '*')))

driver.get(config.bgd_url)

handles = driver.window_handles # 获取所有页面的句柄

driver.switch_to.window(handles[-1]) #切换页面

driver.close()

from selenium import webdriver

from selenium.webdriver.common.keys import Keys

# 创建 Chrome 参数对象

chrome_options = webdriver.ChromeOptions()  

#无界面模式

#chrome_options.add_argument('--headless') 

# 浏览器驱动位置

path = r"D:\software\anaconda3\Scripts\chromedriver.exe"  

# 获取 Chrome 驱动实例

driver = webdriver.Chrome(executable_path=path, options=opt)  

driver.get('http://ww.baidu.com/')  # 打开指定网址页面

print(driver.page_source)  # 输出网页的源代码

element = driver.find_element_by_id("passwd-id")

element = driver.find_element_by_name("passwd")

element = driver.find_element_by_xpath("//input[@id='passwd-id']")

find_element_by_link_text  # 通过 & lt;a>..</a > 中的内容获取，属性 href 的值

find_element_by_partial_link_text

find_element_by_tag_name  # 通过标签名定位

find_element_by_class_name

find_element_by_css_selector

element.get_attribute("name")

element.value_of_css_property('display')

alert = driver.switch_to_alert()

# 或

alert = driver.switch_to.alert()  # 常用

alert.accept()  # 弹窗确定

driver.forward()

driver.back()

from selenium import webdriver

driver = webdriver.Firefox()

driver.get('http://www.python.org/')

driver.save_screenshot('screenshot.png')

driver.quit()

driver.execute_cdp_cmd("Page.addScriptToEvaluateOnNewDocument", {

        "source": """

                Object.defineProperty(navigator, 'webdriver', {

                  get: () => undefined

                })

              """

})

driver.maximize_window()

iframe = driver.find_element_by_id('menu')

driver.switch_to.frame(iframe)

driver,switch_to_frame('') #参数传 frame id 或者 name

driver.switch_to.frame(1)

driver.switch_to.frame(driver.find_elements_by_tag_name("iframe")[0])

driver.switch_to.default_content()

from selenium import webdriver

from selenium.webdriver.common.by import By

from selenium.webdriver.support.ui import WebDriverWait

from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Firefox()

driver.get("http://somedomain/url_that_delays_loading")

try:

    # 等待，直到 id=myDynamicElement 的元素加载后在继续执行

    element = WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.ID, "myDynamicElement")))

    # 等待，直到 id=cusAdvancedQuery 的元素，可被点击后继续执行

    element = WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.ID, 'cusAdvancedQuery')))

finally:

    driver.quit()

from selenium import webdriver

driver = webdriver.Firefox()

driver.implicitly_wait(10) # 设置全局的最长等待时间

driver.get("http://somedomain/url_that_delays_loading")

myDynamicElement = driver.find_element_by_id("myDynamicElement")

element.clear()

element.quit()

img = driver.find_element_by_id('image1')

img.screenshot('./code.png')

driver.save_screenshot('./full_snap.png')

element.send_keys("some text")

element.send_keys(" and some", Keys.ARROW_DOWN)

driver.find_element_by_id("passwd-id")

# 初始化一个 ActionChains 类

action = ActionChains(driver)

# 选中内容

action.key_down(Keys.CONTROL).send_keys('a').key_up(Keys.CONTROL).perform()

# 复制内容

action.key_down(Keys.CONTROL).send_keys('c').key_up(Keys.CONTROL).perform()

# 粘贴内容

action.key_down(Keys.CONTROL).send_keys('v').key_up(Keys.CONTROL).perform()

from selenium.webdriver.support.ui import Select

select = Select(driver.find_element_by_name('name'))

select.select_by_index(index)

select.select_by_visible_text("text")

select.select_by_value(value)

select = Select(driver.find_element_by_id('id'))

select.deselect_all()

select = Select(driver.find_element_by_xpath("xpath"))

all_selected_options = select.all_selected_options

options = select.options

element = driver.find_element_by_name("source")

target = driver.find_element_by_name("target")

from selenium.webdriver import ActionChains

action_chains = ActionChains(driver)

action_chains.drag_and_drop(element, target).perform()

driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

driver.execute_script("document.documentElement.scrollTop = 11245")

for i in range(1, 10767, 10):

    js_code = f'document.documentElement.scrollTop = {i}'

    driver.execute_script(js_code)

from selenium.webdriver.common.action_chains import ActionChains

app_top = driver.find_element_by_id('AppTop_currentli')

# 将鼠标放置在 app_top 元素上

my_action.move_to_element(app_top).perform()

from selenium.webdriver.common.action_chains import ActionChains

rc = driver.find_element_by_id("rightclickid")

ActionChains(driver).context_click(rc).perform()

rc = driver.find_element_by_id("rightclickid")

ActionChains(driver).double_click(rc).perform()

#定位元素的原位置

element = driver.find_element_by_name("source")

#定位元素要移动到的目标位置

target =  driver.find_element_by_name("target")

#执行元素的移动操作

ActionChains(driver).drag_and_drop(element, target).perform()

js = "window.scrollTo(0, document.body.scrollHeight)"

driver.execute_script(js)

js = "window.scrollTo(0, 0)"

driver.execute_script(js)

js = "document.documentElement.scrollTop=7000"

driver.execute_script(js)

briver.execute_script("return 变量名")

img_bs64 = briver.execute_script("return document.getElementsByClassName('图片元素的class')[0].toDataURL('image/png')")  # 返回涵图片 base64 位编码的字符串

img_base = img_bs64.split(',')[1]   # 截取图片的 base64 位编码的字符串

img_base = base64.b64decode(img_base)  # 将 base64 编码数据转为 byte

with open('bg.png', 'wb') as f:

    f.write(img_base)