【1】按照Django官网，编写一个web app 创建project/配置数据库

1. Creating a project

    

 From the command line, cd into a directory where you’d like to store your code, then run the following command:

$ django-admin startproject mysite

Let’s look at what startproject created:
mysite/
    manage.py
    mysite/
        __init__.py
        settings.py
        urls.py
        wsgi.py
2.安装mysqlclient

   pip install mysqlclient 

   ps：MySQLdb不能用于python3

3.Database setup¶(mysql)
   Now, open up mysite/settings.py. It’s a normal Python module with module-level variables representing Django settings.     

 If you wish to use another database, install the appropriate database bindings, and change the following keys in theDATABASES 'default' item to match your database connection settings: 

 DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'mydb',
		'USER':'root',
		'PASSWORD':'ganbare',
		'HOST':'localhost',
		'PORT':'3306',
    }
}