Chapter 11 finished

11-web/README.md

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+# web moduels
+* webbrowser: 是Python自带的，打开浏览器获取指定页面。
+* requests: 从因特网上下载文件和网页
+* Beautiful Soup: 解析HTML，即网页编写的格式
+* selenium: 启动并控制一个Web浏览器。selenium能够填写表单，并模拟鼠标在这个浏览器中点击。
+
+# webbrowser
+<pre>
+import webbrowser
+webbrowser.open(https://cn.bing.com/ditu/Default.aspx?q=' + address)
+</pre>
+
+# requests
+`pip install requests`
+<pre>
+import requests
+
+res = requests.get('http://www.gutenberg.org/cache/epub/1112/pg1112.txt')
+try:
+    res.raise_for_status()
+    print(res.text[:250])
+except Exception as exc:
+	print('There was a problem: %s' % (exc))
+</pre>
+
+# BeautifulSoup
+`pip install beautifulsoup4`
+<pre>
+import bs4
+</pre>
+
+# selenium
+install geckodriver
+https://github.com/mozilla/geckodriver