[TOC]
## 从一个简单例子开始
```python
#!/usr/bin/python
#coding=utf-8
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
# 创建Chrome驱动实例
driver = webdriver.Chrome()
# 启动浏览器并且导航到指定URL
driver.get("https://www.baidu.com/")
# 断言“百度一下”出现在浏览器标题
assert "百度一下" in driver.title
# 定位name属性为“wd"的元素
input_text = driver.find_element_by_name("wd")
# 清空文本输入框，输入文字"selenium",然后回车
input_text.clear()
input_text.send_keys("selenium")
input_text.send_keys(Keys.RETURN)
# 断言"No results found."不包含在当前页面源代码中
assert "No results found." not in driver.page_source
# 关闭浏览器
driver.close()
```
如果运行正常，将会自动执行以下操作：打开一个Chrome浏览器，然后打开百度首页，在输入框中输入“selenium”然后回车。
通过这个例子
* 可以检验我们的环境是否已经安装正常，是否可以通过selenium.webdriver 来与浏览器交互
* 在与浏览器交互的过程，需要先创建浏览器驱动driver，然后`通过driver的一系列api来与浏览器交互`，包括打开浏览器，定位元素，操作元素，关闭浏览器等。
## 后续主要学习路线
1. 掌握元素定位
2. 掌握浏览器操作
3. 掌握常用的断言
4. 掌握一个测试框架
官方文档：[http://selenium-python.readthedocs.io/index.html](http://selenium-python.readthedocs.io/index.html)
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