# 5.1  高级爬虫: 让 Selenium 控制你的浏览器帮你爬

将 **selenium** 绑定到 **Chrome** 上 **webdriver.Chrome()**：

```python
from selenium import webdriver

driver = webdriver.Chrome()     # 打开 Chrome 浏览器

# 将刚刚复制的帖在这
driver.get("https://morvanzhou.github.io/")
driver.find_element_by_xpath(u"//img[@alt='强化学习 (Reinforcement Learning)']").click()
driver.find_element_by_link_text("About").click()
driver.find_element_by_link_text(u"赞助").click()
driver.find_element_by_link_text(u"教程 ▾").click()
driver.find_element_by_link_text(u"数据处理 ▾").click()
driver.find_element_by_link_text(u"网页爬虫").click()

# 得到网页 html, 还能截图
html = driver.page_source       # get html
driver.get_screenshot_as_file("./img/sreenshot1.png")
driver.close()
```

![](https://morvanzhou.github.io/static/results/scraping/5-1-7.png)

让 **selenium** 不弹出浏览器窗口,创建 driver 之前定义几个参数就能摆脱浏览器:

```python
from selenium.webdriver.chrome.options import Options

chrome_options = Options()
chrome_options.add_argument("--headless")       # define headless

driver = webdriver.Chrome(chrome_options=chrome_options)
...
```

Selenium 能做的事:填 Form 表单, 超控键盘等等


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