selenium的几个简单应用和实例一

from selenium import webdriver
options = webdriver.ChromeOptions()
options.add_argument(--headless)
options.add_argument(--disable-gpu)


driver = webdriver.Chrome(chrome_options=options)
driver.get(http://www.baidu.com)
element = driver.find_element_by_css_selector(#su)
print(element.get_attribute(value))
driver.quit()

声明浏览器对象

上面我们知道了selenium支持很多的浏览器，但是如果想要声明并调用浏览器，

这里列举一下常用的查找元素方法：

find_element_by_name find_element_by_id find_element_by_xpath find_element_by_link_text find_element_by_partial_link_text find_element_by_tag_name find_element_by_class_name find_element_by_css_selector

import time
driver = webdriver.Chrome()
driver.maximize_window()
driver.get(http://www.baidu.com)
time.sleep(1)
search_input = driver.find_element_by_css_selector(input#kw)
search_input.send_keys(python)
time.sleep(1)
submit = driver.find_element_by_css_selector(input#su)
submit.click()
time.sleep(1)
print(driver.current_url)
results = driver.find_elements_by_css_selector(h3 > a)
for result in results:
    print(result.text)

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from selenium import webdriver
import time
def douban():

    while True:
        driver = webdriver.Chrome()
        driver.maximize_window()
        driver.get(https://accounts.douban.com/login)
        time.sleep(1)
        search_input1 = driver.find_element_by_css_selector(input#email)
        search_input1.send_keys(aaa@gmail.com)
        time.sleep(1)
        search_input2 = driver.find_element_by_css_selector(input#password)
        search_input2.send_keys(aaa)
   
        captcha = driver.find_element_by_css_selector(img#captcha_image)
        submit = driver.find_element_by_css_selector(.btn-submit)
        if captcha:
            captcha_field = driver.find_element_by_css_selector(input#captcha_field)
            text = input("please input captcha")
            captcha_field.send_keys(text)
            submit.click()
        else:
            submit.click()
douban()