MEDIA_ROOT = os.path.join(BASE_DIR,'media').replace("//","/")

MEDIA_URL = '/media/'

from django.conf.urls import url,include

from django.contrib import admin

from django.conf import settings

from django.conf.urls.static import static

urlpatterns = [

    url(r'^admin/', admin.site.urls),

    url(r'^blog/',include('blog.urls') ),

] + static(settings.MEDIA_URL,document_root=settings.MEDIA_ROOT )        #添加图片的url

class Entry(models.Model):

    .

    .

    .

     def get_absolute_url(self):

        #获取当前博客详情页的url

        return reverse("blog:blog_detail",kwargs={"blog_id":self.id})     #app名字，详情页url的别名，参数是当前博客的id

    def increase_visiting(self):

        #访问量加1

        self.visiting += 1

        self.save(update_fields=['visiting'])   #只保存某个字段

from django.shortcuts import render

from . import models

def index(request):

    entries = models.Entry.objects.all()

    return render(request,'blog/index.html',locals())

def detail(request,blog_id):

    entry = models.Entry.objects.get(id=blog_id)

    entry.increase_visiting()

    return render(request,'blog/detail.html',locals())

{% extends 'blog/base.html' %}

{% block title %}博客首页{% endblock %}

{% block content %}

    <div class="container">

        <div class="row">

            <div class="col-md-9">

                {% for entry in entries %}

                    <h2><a href="{{ entry.get_absolute_url }}">{{ entry.title }}</a></h2> <br>

                    {% if entry.img %}

                        <img src="{{ entry.img.url }}" width="60%" height="270px"/>

                    {% endif %}

                    {% if entry.abstract %}

                        <p>{{ entry.abstract }}</p>

                    {% else %}

                        <p>{{ entry.body|truncatechars:180 }}</p>

                    {% endif %}

                    <p>

                        <span>作者：{{ entry.author }}</span>

                        <span>&nbsp;&nbsp;&nbsp;&nbsp;发布时间：{{ entry.created_time }}</span>

                        <span>&nbsp;&nbsp;&nbsp;&nbsp;阅读数：{{ entry.visiting }}</span>

                    </p>

                {% endfor %}

            </div>

        </div>

    </div>

{% endblock %}

{% extends 'blog/base.html' %}

{% block title %}博客详情页{% endblock %}

{% block content %}

    博客{{ blog_id }}的详情页

{% endblock %}

{% extends 'blog/base.html' %}

{% block title %}博客详情页{% endblock %}

{% block content %}

    <div class="container">

        <div class="row">

            <div class="col-md-9">

                <h1>{{ entry.title }}</h1>

                <p>

                    <strong>{{ entry.author }}</strong>

                    &nbsp;&nbsp;&nbsp;&nbsp;{{ entry.created_time|date:'Y年m月d日' }}

                    &nbsp;&nbsp;&nbsp;&nbsp;分类：

                    {% for category in entry.category.all %}

                        &nbsp;&nbsp;<a href="#">{{ category.name }}</a>

                    {% endfor %}

                    &nbsp;&nbsp;&nbsp;&nbsp;标签：

                    {% for tag in entry.tags.all %}

                        &nbsp;&nbsp;<a href="#">{{ tag.name }}</a>

                    {% endfor %}

                    &nbsp;&nbsp;&nbsp;&nbsp;浏览量：

                            &nbsp;&nbsp;{{ entry.visiting }}

                    {% if entry.img %}

                        <img src="{{ entry.img.url }}" width="60%" height="270px"/>

                    {% endif %}

                    <hr />

                    <p>

                        {{ entry.body }}

                    </p>

                </p>

            </div>

        </div>

    </div>

{% endblock %}

pip install markdown

pip install pygments

import markdown,pygments

def detail(request,blog_id):

    entry = models.Entry.objects.get(id=blog_id)

    md = markdown.Markdown(extensions=[

        'markdown.extensions.extra',

        'markdown.extensions.codehilite',

        'markdown.extensions.toc',

    ])

    entry.body = md.convert(entry.body)

    entry.toc = md.toc

    entry.increase_visiting()

    return render(request,'blog/detail.html',locals())

{% extends 'blog/base.html' %}

{% load staticfiles %}

{% block title %}博客详情页{% endblock %}

{% block css %}

    <link rel="stylesheet" href="{% static 'blog/css/github.css' %}">

{% endblock %}

## 1.python语言介绍

   编程语言主要从以下几个角度进行分类：编译型，静态型，动态性，强类型定义语言和弱类型定义语言

 - 编译型：有一个负责翻译的程序来对我们的源代码进行转换，生成对应的可执行代码，这个过程就是编译（Compile），而负责编译的程序就被称为编译器（Compiler）

 - 通常我们所说的动态语言，静态语言是指动态类型语言和静态类型语言

## 2.python的优缺点

 - 优点：简单、开发效率高、高级语言、可移植性、可扩展性、可嵌入性

 - 缺点：速度慢，但是相对的、代码不能加密、线程不能利用多CPU问题

## 3.高阶函数

```python

def func():

    print('in the func')

    return foo()

def foo():

    print('in the foo()')

    return 666

res = func()

print(res)

```