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Python10分钟入门教程，Python入门神图一张

这篇文章主要介绍了Python10分钟入门教程，分享一张Python入门神图一张，具有一定的参考价值，感兴趣的小伙伴们可以参考一下|初试牛刀假设你希望学习Python这门语言，却苦于找不到一个简短而全面的入门教程。那么本教程将花费十分钟的时间带你走入Python的大门。本文的内容介于教程(Toturial)和速查手册(CheatSheet)之间，因此只会包含一些基本概念。很显然，如果你希望真正学好一门语言，你还是需要亲自动手实践的。在此，我会假定你已经有了

系统 2019-09-27 17:48:38 2660

Python

python从入门到精通（DAY 2）

1、字典复制：dict={'name':'wang','sex':'m','age':34,'job':'it'}info=dict##别名（二个字典指向内存的同一地址空间）info1=dict.copy()#shadowcopy浅复制（嵌套字典第一层独立，第二层以下相关联）importcopycopy.copy()#shadowcopy浅复制copy.deepcopy()#deepcopy深复制（完全独立）注：浅复制下的关联只是针对字典初始状态包含的嵌套

系统 2019-09-27 17:37:40 2660

编程技术

如何使用触发器实现数据库级守护,防止DDL操作

如何使用触发器实现数据库级守护,防止DDL操作--对于重要对象,实施DDL拒绝,防止create,drop,truncate,alter等重要操作LastUpdated:

编程技术

重置centos的root密码

CentOS忘记root密码解决办法说明操作系统：CentOS6.0遇到问题：忘记管理员账号root的密码，进不了系统解决办法：重置root密码为123456操作：开机启动系统，在进入系统之前按键盘上面的Esc键，会进入下面的界面系统运维说明操作系统：CentOS6.0遇到问题：忘记管理员账号root的密码，进不了系统解决办法：重置root密码为123456操作：开机启动系统，在进入系统之前按键盘上面的Esc键，会进入下面的界面按键盘上的e键，出现下面界面

系统 2019-08-29 22:48:08 2660

Java

java中关于时间日期操作的常用函数

1.计算某一月份的最大天数Calendartime=Calendar.getInstance();time.clear();time.set(Calendar.YEAR,year);time.set(Calendar.MONTH,i-1);//注意,Calendar对象默认一月为0intday=time.getActualMaximum(Calendar.DAY_OF_MONTH);//本月份的天数注：在使用set方法之前，必须先clear一下，否则很多信

系统 2019-08-29 22:31:47 2660

编程技术

出差到天津的计划

今天下午要做K78去天津，这是我第一次真正的去天津，以前都是路过的，不算数，这次的计划如下：4月12日到达天津，做666路去客户那里争取搞定，如果不行只能住一天了，剩下的就是赶快返回长春，现在身体的恢复很慢，很痛恨出差，可是没办法了。去天津也就想弄点吃的了狗不理包子、十八街麻花、耳朵眼炸糕，这些东西也不知道可以弄到几样，更多好吃的在http://destinations.ctrip.com/Destinations/DistrictdiningOvervi

系统 2019-08-29 22:31:24 2660

编程技术

十步完全理解SQL

很多程序员视SQL为洪水猛兽。SQL是一种为数不多的声明性语言，它的运行方式完全不同于我们所熟知的命令行语言、面向对象的程序语言、甚至是函数语言（尽管有些人认为SQL语言也是一种函数式语言）。我们每天都在写SQL并且应用在开源软件jOOQ中。于是我想把SQL之美介绍给那些仍然对它头疼不已的朋友，所以本文是为了以下读者而特地编写的：1、在工作中会用到SQL但是对它并不完全了解的人。2、能够熟练使用SQL但是并不了解其语法逻辑的人。3、想要教别人SQL的人。本

系统 2019-08-29 22:15:28 2660

CSS

仿iPhone开关式按钮(jQuery+CSS3)

仿iPhone开关式按钮(jQuery+CSS3)viewsourceprint?001002003004005006仿iPhone开关式按钮(jQuery+CSS3)</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-29 22:11:15</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2660</span></span>  </p> </article><article class="excerpt"> <header> <a title="Tomcat" class="label label-important zj-del-target" href="/category/50">Tomcat<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/10300" title="tomcat6中文乱码设置" target="_blank" onclick="return recordId('',)">tomcat6中文乱码设置 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/10300" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/1.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/10300';}else{window.open('/article/10300');}" style="cursor: pointer;">get方式的解决办法：打开server.xml文件，找到区块：<Connectorport="8080"maxThreads="150"minSpareThreads="25"maxSpareThreads="75"enableLookups="false"redirectPort="8443"acceptCount="100"debug="0"connectionTimeout="20000"disableUploadTimeout="true"URIE</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-12 09:27:22</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2660</span></span>  </p> </article><article class="excerpt"> <header> <a title="数据库相关" class="label label-important zj-del-target" href="/category/32">数据库相关<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/8020" title="如何分析思考oralce的一些问题的一点感悟！" target="_blank" onclick="return recordId('',)">如何分析思考oralce的一些问题的一点感悟！ </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/8020" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/10.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/8020';}else{window.open('/article/8020');}" style="cursor: pointer;">在pub闲逛时看到这么一个问题：开发人员反应，用pl/sqldeveloper查询mchnt这张IOT表特别慢，但其它表都很快，具体情况如下：1、表数据量很少selectcount(1)fromap07.mchnt;COUNT(1)----------122、mchnt表的pkindex的段信息：------------------BasicInfo---------------------segment_name.....................</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-12 01:54:44</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2660</span></span>  </p> 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