未安装requests包的安装包，谷歌浏览器安装
爬虫知识学习什么是url，header请求头，网页源代码，简单了解html标签
requests包的使用get方法 返回网页源代码
打印输出简书首页的源代码
import requests #导入
response = requests.get("http://www.jianshu.com/") #获取简书首页地址
print(response.status_code) #打印状态码
print(response.text) #打印响应的文本
输出：
"C:\Program Files\Python36\python.exe" "E:/python project/jianshushouye.py"
200
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0,user-scalable=no">
<meta http-equiv="Cache-Control" content="no-siteapp" />
<meta http-equiv="Cache-Control" content="no-transform" />
<meta name="applicable-device" content="pc,mobile">
<meta name="MobileOptimized" content="width"/>
<meta name="HandheldFriendly" content="true"/>
<meta name="mobile-agent" content="format=html5;url=http://localhost/">
<meta name="description" content="简书是一个优质的创作社区，在这里，你可以任性地创作，一篇短文、一张照片、一首诗、一幅画……我们相信，每个人都是生活中的艺术家，有着无穷的创造力。">
<meta name="keywords" content="简书,简书官网,图文编辑软件,简书下载,图文创作,创作软件,原创社区,小说,散文,写作,阅读">
<meta name="360-site-verification" content="604a14b53c6b871206001285921e81d8" />
<meta property="wb:webmaster" content="294ec9de89e7fadb" />
<meta property="qc:admins" content="104102651453316562112116375" />
<meta property="qc:admins" content="11635613706305617" />
<meta property="qc:admins" content="1163561616621163056375" />
<meta name="google-site-verification" content="cV4-qkUJZR6gmFeajx_UyPe47GW9vY6cnCrYtCHYNh4" />
<meta name="google-site-verification" content="HF7lfF8YEGs1qtCE-kPml8Z469e2RHhGajy6JPVy5XI" />
<meta http-equiv="mobile-agent" content="format=html5; url=http://localhost/">
<meta name="apple-mobile-web-app-title" content="简书">
<title>简书 - 创作你的创作</title>
<meta name="csrf-param" content="authenticity_token" />
<meta name="csrf-token" content="lFwn5L5XKzBfwZB5EvHN+pcdozh26wz6f6F2FBhL7uV2rsNyJjodvAcVUbQLboTnJleTHkZp3Tee44svUBONsQ==" />
<link rel="stylesheet" media="all" href="//cdn2.jianshu.io/assets/web-85629238feda813871f6.css" />
<link rel="stylesheet" media="all" href="//cdn2.jianshu.io/assets/web/pages/home/index/entry-85629238feda813871f6.css" />
<link href="//cdn2.jianshu.io/assets/favicons/favicon-783beb88ed621ceab614de960376ac0c.ico" rel="icon">
<link rel="apple-touch-icon-precomposed" href="//cdn2.jianshu.io/assets/apple-touch-icons/57-47624b2e2161e8eb144462c85db0a5ff.png" sizes="57x57" />
<link rel="apple-touch-icon-precomposed" href="//cdn2.jianshu.io/assets/apple-touch-icons/72-c00cde7cf98fc49e50cbb3ee1dcd5804.png" sizes="72x72" />
<link rel="apple-touch-icon-precomposed" href="//cdn2.jianshu.io/assets/apple-touch-icons/76-e8af0bdeaf1ba31e303b1fde8b5e66c4.png" sizes="76x76" />
<link rel="apple-touch-icon-precomposed" href="//cdn2.jianshu.io/assets/apple-touch-icons/114-f4c78569bbf1977e8382a5fd90c9237a.png" sizes="114x114" />
<link rel="apple-touch-icon-precomposed" href="//cdn2.jianshu.io/assets/apple-touch-icons/120-cf10c3711dba269522743729efe66bbc.png" sizes="120x120" />
<link rel="apple-touch-icon-precomposed" href="//cdn2.jianshu.io/assets/apple-touch-icons/152-7bd60457b5f3ecbf1343f0e6241be4f8.png" sizes="152x152" />
</head>
<body lang="zh-CN" class="reader-black-font">
<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="width-limit">
</a>
<div class="content">
<div class="author">
<a class="avatar" target="_blank" href="/u/ad73e614982f">
</a>
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<a class="avatar" target="_blank" href="/u/05b00dea008f">
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