django 1.11.1 连接MySQL

一、定义数据库 settings.py搜索   DATABASES

参考路径：   D:Python27Libsite-packagesdjangoinappappsettings.py

    'mysql': {
    'ENGINE': 'django.db.backends.mysql',
    'HOST': '192.168.1.103',
    'POST': '3306',
    'NAME': 'aaa',  # 数据库名称
    'USER': 'root',
    'PASSWORD': '123456',
    'OPTIONS': {
        'init_command': "SET sql_mode ='STRICT_TRANS_TABLES' "
    }
}

　　

新建了models.py 

参考路径D:Python27Libsite-packagesdjangoinappappmodels.py

引入models 模块 

创建user表

# -*- coding:utf-8 -*-
from __future__ import unicode_literals
from django.db import models

class user(models.Model):
    username = models.CharField(max_length=40)
    password = models.CharField(max_length=30)

二、同步数据库 manage.py migrate --database=mysql

 先执行python manage.py makemigrations 

在执行python manage.py migrate --database=mysql

D:Python27Libsite-packagesdjangoinapp>manage.py migrate --database=mysql

　　

 

实例 创建member表

1）models.py文件里 定义数据表结构

class 数据表名 首字母大写

 

 2） python manage.py makemigrations 

先要进入项目目录在执行以上命令

3）python manage.py migrate --database=mysql

　　

然后后数据库管理工具看眼

遇到的问题

1.执行　manage.py migrate --database=mysql　报错 ，

SyntaxError: Non-ASCII character 'xe6' in file D:Python27Libsite-packagesdjangoinappappsettings.py on line 135, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details

解决办法

D:Python27Libsite-packagesdjangoinappappsettings.py 顶部定义编码格式 

# -*- coding: utf-8 -*-

2.同样执行 manage.py migrate --database=mysql　报错

django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb.
Did you install mysqlclient or MySQL-python?

解决办法

1）安装  Microsoft Visual C++ 9.0  

http://aka.ms/vcpython27

下载地址 https://www.microsoft.com/en-us/download/details.aspx?id=44266

2）安装MySQL-python

pip install mysql-python

这里是通过安装 mysqlclient

D:Python27Libsite-packagesdjangoinapp>pip install mysqlclient==1.3.4
Collecting mysqlclient==1.3.4
Downloading mysqlclient-1.3.4-cp27-none-win_amd64.whl (1.0MB)
100% |████████████████████████████████| 1.0MB 412kB/s
Installing collected packages: mysqlclient
Successfully installed mysqlclient-1.3.4

提示

pip安装可以选择版本安装

比如 pip install mysql-python == 1.2.4 报错  

urllib2.HTTPError: HTTP Error 403: SSL is required

增加版本就变成 pip install mysql-python == 1.2.5 报错

mysql-python下载地址

https://pypi.python.org/pypi/MySQL-python/

MySQL-3.23 through 5.5 and Python-2.4 through 2.7 are currently supported. Python-3.0 will be supported in a future release. PyPy is supported.

不支持mysql 5.6!

https://dev.mysql.com/downloads/connector/python/ 

版本号问题

Table 3.1 Connector/Python Version Reference

Connector/Python Version	MySQL Server Versions	Python Versions	Connector Status
8.0 (continuation of 2.2)	8.0, 5.7, 5.6, 5.5	3.4 and higher, 2.7	Developer Milestone
2.2 (continues as 8.0)	5.7, 5.6, 5.5	3.4 and higher, 2.7	Developer Milestone
2.1	5.7, 5.6, 5.5	3.4 and higher, 2.7, 2.6	Recommended version
2.0	5.7, 5.6, 5.5	3.4 and higher, 2.7, 2.6	GA, Supported
1.2	5.7, 5.6, 5.5 (5.1, 5.0, 4.1)	3.1 and higher, 2.7, 2.6	GA, Supported

https://dev.mysql.com/doc/connector-python/en/connector-python-versions.html

 Connector/Python

Connector/Python Coding Examples  连接MySQL实例代码

MySQL Connector/Python Developer Guide   Connector/Python 开发者指南

Installing Connector/Python from a Binary Distribution 多平台安装

 

参考资料

django+mysql的简单开发教程

 

 

文档

Multiple databases