django开发：
1 安装python环境
官网下载后安装 或者安装anaconda
conda env list
anaconda相关操作：
查看环境
conda env list
创建环境
conda create -n python36 python=3.6
进入环境
source activate python36
activate python36 # windows下
搜索包
conda search mxnet*
指定环境，查看已安装的包
conda list -n python36
指定环境，安装指定版本的包
conda install -n python36 mxnet==1.0.0
指定环境，更新包
conda update -n python36 mxnet
指定环境，删除包
conda remove -n python36 mxnet
导出环境为yml
conda env export > environment.yml
根据yml创建环境
conda env create -f environment.yml
对yml文件修改后更新环境
conda env update -f environment.yml
退出环境
source deactivate
deactivate # windows下
复制环境
conda create -n python36 --clone python36_new
删除环境
conda remove -n python36 --all
更改镜像源
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
conda config --set show_channel_urls yes
修改后可以在~/.condarc配置文件中可以看到相应信息
pip修改镜像源（修改~/.pip/pip.conf配置文件）
[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple
2 安装 django
pip install django
查看是否安装成功： django-admin
3 初始化django项目
django-admin startprojetc 创建项目
django-admin startapp 启动运用
makemigrations 创建迁移文件
migrate 执行迁移
django运用和项目的区别：项目可以直接运行，项目可以包含若干个运用
建立模型
models文件
from django.db import models
# Create your models here.
class Article(models Model):
article_id = models.AutoField(primary_key=True)
title = models.TextField()
brief_content = models.TextField()
content = models.TextField()
created_at = models.DateTimeField(auto_now=True)
python manage.py makemigrations 生成迁移文件
python manage.py migrate 执行迁移
python manage.py shell shell环境进入
In [1]: from blog.models import Article
In [2]: a = Article()
In [3]: a.title = "biaoti"
In [4]: a.breif_content = "zhaiyao"
In [5]: a.content="详细内容"
In [6]: a.created_at="2019-01-01"
In [7]: print(a)
Article object (None)
In [8]: a.save()
In [9]: articles = Article.objects.all()
In [10]: article = articles[0]
In [11]: article.title
Out[11]: 'biaoti'
In [12]: article.brief_content
Out[12]: ''
In [13]: article.brief_content = 'zhaiyao'
In [14]: article.save()
In [15]: article.brief_content
Out[15]: 'zhaiyao'
django的admin模块
python manage.py createsuperuser 创建超级管理员
配置中文
LANGUAGE_CODE = 'zh-hans'
TIME_ZONE = 'PRC'
注册文章模型到后台 编辑admin.py
from django.contrib import admin
# Register your models here.
from .models import Article
admin.site.register(Article) 然后从其服务 就会发现有文章的了
列表显示对象 改为显示标题
更改models里面的类 增加
def __str__(self):
return self.title
显示多个字段
admin.py
from django.contrib import admin
# Register your models here.
from . import models
class ArticleAdmin(admin.ModelAdmin):
list_display = ["title","brief_content","content","created_at"]
list_display_link = ["id","title"]
admin.site.register(models.Article, ArticleAdmin)
过滤器
from django.contrib import admin
# Register your models here.
from . import models
class ArticleAdmin(admin.ModelAdmin):
list_display = ["title","brief_content","content","created_at"]
list_display_link = ["id","title"]
list_filter = ('created_at',)
admin.site.register(models.Article, ArticleAdmin)