<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[dev2014的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/dev2014</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; dev2014]]></copyright><item><title><![CDATA[python中datetime模块中strftime/strptime函数]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088335</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088335</guid><author>dev2014</author><pubDate>Thu, 12 Sep 2019 20:24:00 +0800</pubDate><description><![CDATA[f==format 　　　　p==parse
1、获取当前时间（日期格式）

from datetime import datetime
datetime.now()#输出　　datetime.datetime(2019, 9, 12, 20, 17, 15, 426867)

2、由日期格式转化为字符串格式的函数为: datetime.datetime.strftime(...]]></description><category></category></item><item><title><![CDATA[Django的SQL注意事项（以及时间戳转换日期格式）]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088333</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088333</guid><author>dev2014</author><pubDate>Wed, 20 Mar 2019 15:33:00 +0800</pubDate><description><![CDATA[执行原生SQL：


1         from django.db import connection, connections
2         cursor = connection.cursor()
3         cursor.execute(
4              """select * from tb where nid=%s""",[user....]]></description><category></category></item><item><title><![CDATA[HTML中复选框的使用方法]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088331</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088331</guid><author>dev2014</author><pubDate>Wed, 20 Mar 2019 13:43:00 +0800</pubDate><description><![CDATA[1             &lt;select id="question"&gt;
 2                 {# 常见问题。ajax用editor.html('1231254')填充#}
 3                 &lt;option value="1"&gt;手机问题&lt;/option&gt;
 4                 &lt...]]></description><category></category></item><item><title><![CDATA[Http常见状态码]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088328</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088328</guid><author>dev2014</author><pubDate>Sun, 17 Mar 2019 15:34:00 +0800</pubDate><description><![CDATA[200 成功
301/302永久性重定向/临时重定向
403没有访问权限
404没有对应资源
500服务器错误
503服务器停机或正在维护

转载于:https://www.cnblogs.com/Neroi/p/10547200.html...]]></description><category></category></item><item><title><![CDATA[scrapy yield 回调函数不执行解决方案]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088326</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088326</guid><author>dev2014</author><pubDate>Fri, 15 Mar 2019 17:36:00 +0800</pubDate><description><![CDATA[1 yield Request(url=parse.urljoin(response.url, p_url),callback=self.parse_detail)

回调函数不执行：
加上：
dont_filter=True参数

yield Request(url=parse.urljoin(response.url, p_url),callback=self.par...]]></description><category></category></item><item><title><![CDATA[jsonp跨域请求]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088327</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088327</guid><author>dev2014</author><pubDate>Tue, 05 Mar 2019 13:59:00 +0800</pubDate><description><![CDATA[原生XHR：

    function submitJsonp2() {
        var tag = $('&lt;script&gt;');
        tag.attr('src', 'http://127.0.0.1:8000/an/?callback=fuck');//发送给别的服务器自己的回调函数名
        $(document.head).ap...]]></description><category></category></item><item><title><![CDATA[kindeditor简单使用]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088325</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088325</guid><author>dev2014</author><pubDate>Mon, 04 Mar 2019 14:33:00 +0800</pubDate><description><![CDATA[先引入：

    &lt;script src="/static/jquery-3.3.1.min.js"&gt;&lt;/script&gt;
    &lt;script src="/static/kindeditor-4.1.11-zh-CN/kindeditor/kindeditor-all.js"&gt;&lt;/script&gt;

基本使用参数：

   ...]]></description><category></category></item><item><title><![CDATA[Django之ModelForm组件]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088323</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088323</guid><author>dev2014</author><pubDate>Sun, 03 Mar 2019 23:28:00 +0800</pubDate><description><![CDATA[class ModelForm(forms.ModelForm):
    class Meta:
        model=models.UserInfo
        fields='__all__'#所有字段，列表，可以写成列表['username']
        exclude=['username']
        labels=None#提示消息...]]></description><category></category></item><item><title><![CDATA[Django的Field（字段）]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088321</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088321</guid><author>dev2014</author><pubDate>Tue, 15 Jan 2019 17:44:00 +0800</pubDate><description><![CDATA[字段
1、models.AutoField　　自增列 = int(11)
　　如果没有的话，默认会生成一个名称为 id 的列，如果要显示的自定义一个自增列，必须将给列设置为主键 primary_key=True。
2、models.CharField　　字符串字段
　　必须 max_length 参数
3、models.BooleanField　　布尔类型=tinyint...]]></description><category></category></item><item><title><![CDATA[正则表达式]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088319</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088319</guid><author>dev2014</author><pubDate>Wed, 09 Jan 2019 14:05:00 +0800</pubDate><description><![CDATA[元字符：.^$+?{}[]|()\
.通配符（除了\n的任何字符）
* 0~无穷（可以按照0*True，结果为0）尽可能多的匹配     
+ 1~无穷（可以按照0+True，结果为True）
？ 出现0~1次(取最少)非贪婪匹配
{}匹配次数
{0，}==* {0,1}==？ {1，...]]></description><category></category></item><item><title><![CDATA[关于在views对models创建的表的简单操作]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088344</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088344</guid><author>dev2014</author><pubDate>Wed, 12 Dec 2018 14:36:00 +0800</pubDate><description><![CDATA[1     models.User.objects.create(c1='a',c2='b')
2     
3     obj=models.User(c1='a',c2='b')
4     obj.save()

增加


1     models.User.objects.get(id=1)
2     models.User.objects.all()...]]></description><category></category></item><item><title><![CDATA[Django的forms包部分重要用法：]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088346</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088346</guid><author>dev2014</author><pubDate>Sat, 08 Dec 2018 12:14:00 +0800</pubDate><description><![CDATA[1 from django.forms import fields
2 from django.forms import Form
3 from django.forms import widgets

在views导入：
导入包之后，定义一个继承自Form的类并定义用于验证的字段：


1 class TestForm(Form):
2     user = ...]]></description><category></category></item><item><title><![CDATA[MySQL数据库之索引]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088342</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088342</guid><author>dev2014</author><pubDate>Fri, 23 Nov 2018 14:59:00 +0800</pubDate><description><![CDATA[create table test1(
      id int primary key AUTO_increment,
      name varchar (20),
      salary int default  1000
);
insert into test1 (name)values ('111'),("222"),("333"),("444");
...]]></description><category></category></item><item><title><![CDATA[DataBase安装及简单配置]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088348</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088348</guid><author>dev2014</author><pubDate>Tue, 20 Nov 2018 14:39:00 +0800</pubDate><description><![CDATA[下载以及安装

打开mysql官网下载页面：http://dev.mysql.com/downloads/mysql/
用管理员身份打开cmd命令行工具，cd到解压文件的bin目录
输入mysqld install回车运行，出现安装成功就可以了。

启动与登陆
配置环境变量：添加MySql的bin目录在Path下
cmd管理员模式再运行net start mysql 成功...]]></description><category></category></item><item><title><![CDATA[python面向对象编程]]></title><link>https://blog.youkuaiyun.com/dev2014/article/details/102088338</link><guid>https://blog.youkuaiyun.com/dev2014/article/details/102088338</guid><author>dev2014</author><pubDate>Sat, 20 Oct 2018 23:54:00 +0800</pubDate><description><![CDATA[通过一个类来描述一类事物的特征和动作。
对象是每个有属性（特征）和函数（动作）的具体事物，对象可以通过调用属性（特征）来执行不同的函数（动作）。
对象由类实例化产生。


 1 def school(name,addr,year):#整合属性和动作
 2     def init(name,addr,year,test):# 属性
 3         attribute ...]]></description><category></category></item></channel></rss>