Selenium

1，下载浏览器chrome
2，驱动下载：http://npm.taobao.org/mirrors/chromedriver/ 对应版本下载后放入path

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
import time,os
chrome_opt = Options()      # 创建参数设置对象.
chrome_opt.add_argument("--no-sandbox") # 允许root
chrome_opt.add_argument("--headless")   # 无界面化.
chrome_opt.add_argument("--disable-gpu")    # 配合上面的无界面化.
chrome_opt.add_argument("--window-size=1366,768")   # 设置窗口大小, 窗口大小会有影响.


driver = webdriver.Chrome(chrome_options=chrome_opt)  # 创建Chrome对象并传入设置信息.
driver.get("https://www.baidu.com")     # get方式访问百度.
name = driver.find_element_by_name("uid")
passwd = driver.find_element_by_name("upw")
submit = driver.find_element_by_name("smbtn")

driver.execute_script("arguments[0].value = "name";", name)
driver.execute_script("arguments[0].value = "passwd";", passwd)
submit.click()
iframe = driver.find_element_by_name("zzj_top_6s")
src = iframe.get_attribute("src")
driver.get(src)

submit2 = driver.find_element_by_xpath("//*[@id="bak_0"]/div[13]/div[3]/div[4]")
submit2.click()

submit3 = driver.find_element_by_xpath("/html/body/form/div[3]/div[4]")
submit3.click()

print(driver.page_source)       # 打印加载的page code, 证明(prove) program is right.
driver.quit()   # 使用完, 记得关闭浏览器, 不然chromedriver.exe进程为一直在内存中.