1、Python很有名，但是一直没在实际项目中用过，今天花30分钟学习下。
去Python官网https://www.python.org/downloads/
2、2.X与3.X版本相差比较大，新手用最新的3.6.4。
3、下载安装。
4、安装BeautifulSoup,CMD进入C:\Users\xxx\AppData\Local\Programs\Python\Python36-32\Scripts，运行 pip install bs4.
5、桌面建一个记事本test.py，去网上找例子，注意3.x与2.x语法不一样下面代码是3.x下可以使用的。
#!/usr/bin/python
# -*- coding: utf-8 -*-
from bs4 import BeautifulSoup
import urllib.request
url = r'http://douban.com'
res = urllib.request.urlopen(url)
html = res.read().decode('utf-8')
html_doc = """
<html><head><title>The Dormouse's story</title></head>
<body>
<p class="title"><b>The Dormouse's story</b></p>
<p class="story">Once upon a time there were three little sisters; and their names were
<a href="http://example.com/elsie" class="sister" id="link1">Elsie</a>,
<a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and
<a href="http://example.com/tillie" class="sister" id="link3">Tillie</a>;
and they lived at the bottom of a well.</p>
<p class="story">...</p>
""" #获取BeautifulSoup对象并按标准缩进格式输出，下面用html,或者html_doc一个是本地，一个是远程。
soup = BeautifulSoup(html,"html.parser")
print(soup.prettify())
print(soup.title)
6、右键Edit with IDE,Run、Run Moudle，输出结果了吧，入门就这么简单。