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在win和Linux系统中python命令行运行的不同

今天，在完成一个小的python习题，习题的主要内容是读取一个帮助模块，并保存到本地文件。知道是用pydoc进行模块的读取，但是在windows系统下，调用os模块之后，结果总是为空。核心语句：helpfile=os.popen('pydoc%s'%module).read()此语句在Linux下可以正常运行，结果正常。后来发现，在Windows下，该修改为：helpfile=os.popen('python-mpydoc%s'%module).read(

系统 2019-09-27 17:38:03 1933

Python

Python实现模拟时钟代码推荐

Python实现模拟时钟代码推荐#coding=utf8importsys,pygame,math,randomfrompygame.localsimport*fromdatetimeimportdatetime,date,timedefprint_text(font,x,y,text,color=(255,255,255)):imgtext=font.render(text,True,color)screen.blit(imgtext,(x,y))def

系统 2019-09-27 17:37:56 1933

编程技术

故障智能诊断读书笔记（一）

1、故障智能诊断系统的发展趋势（1）多种知识表示方法的结合；（2）经验知识（浅层知识）与原理知识（深层知识）的紧密结合；（3）诊断系统与神经网络的结合；（4）虚拟现实技术将得到重视和应用；（5）数据库技术与人工智能技术相互渗透。——王道平，张义忠著《故障智能诊断系统的理论与方法》，冶金工业出版社2、故障诊断方法分类示意图

系统 2019-08-29 23:49:15 1933

编程技术

dmp 数据增量导入

导出指定条件数据普通导入表方式导入出现日志如下：说明在建立表的时候报错，因为数据库里已经有这张表了，报错就中断退出了。可以这样处理，在导入的选项上选择忽略，就可以将建表的错误忽略，而到导入数据的地方了，这样增量的数据就可以导入到这个表里日志如下：哈哈。dmp数据增量导入

系统 2019-08-29 23:39:10 1933

编程技术

拾级进阶--2.5图片滚动

网上浏览，我们会看到形形色色的有图片滚动的菜单、横幅及广告，尽管效果基本相同，但因为编写者的思路各异，所以脚本的繁易差异也很大，这里介绍的是一个脚本非常简单的实例。[url=http://bbs.flasher123.com/dispbbs.asp?boardid=10&id=23482][/url]本节问题讨论交流[url=http://laoxian.flasher123.com/fas/2/flash/21.fla][/url]源文件下载[url=h

系统 2019-08-29 23:35:52 1933

编程技术

【Flex应用展示之】-GOOGLE WEB DESKTOP

Flex应用展示之-GOOGLEWEBDESKTOP刚刚拿到这个消息的时候，我很吃惊，啊，google终于要找哦web操作系统啦，也是我便去google的lab去找这个产品，早来找不到。到最后回到作者的网页上才发现，原来这个应用并不是google搞得，而是另一款的flex网络应用程序。太有才，我只能这么说了，于是便赶到其主页一睹新鲜。这个应用搜集了google几乎所有的产品，不过现在做的不是太完善，还有很多的bug有待改进，不过我很期待这款应用程序何时才能

系统 2019-08-29 23:30:03 1933

编程技术

母版页和相对路径

一个经常让开发人员疑惑的问题是母版页是如何处理相对路径的。如果你使用的是静态文字，这一问题不会困扰你。不过，如果你加入了标签或者指向其他资源的HTML标签，问题就可能发生。当你把母版页和内容页放在不同的目录时，问题就发生了。把母版页和内容页分放到不同的目录，这是大型网站推荐使用的最佳实践。实际上，微软建议你在专门的文件夹里保存所有的母版页。不过，如果你不够小心，使用相对路径时会带来问题。例如，假设你把母版页放在一个叫做MasterPages的子文

系统 2019-08-29 23:28:09 1933

编程技术

完整的简单层拖动代码

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</div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/18794';}else{window.open('/article/18794');}" style="cursor: pointer;">一、.net变量命名的注意事项1.变量名的第一个字符必须是字母、汉字、下划线。2.变量名不能包含空格、小数点、以及各种符号3.组成变量名的字符数不能超过255个字符4.变量名不能是关键字5.变量名在同一范围内必须是惟一的二、变量的声明在默认的情况下，.NET编译器强制使用变量声明，即在使用变量前，必须声明变量VB.NET提供了控制声明的开关。如果将此开关关闭，则无需声明即可使用变量。使用的方法如下：在集成开发环境中，设置项目的属性，然后选择“编译”，更改O</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 23:11:05</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">1933</span></span>  </p> </article><article class="excerpt"> <header> <a title="编程技术" class="label label-important zj-del-target" href="/category/30">编程技术<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/18703" title="Solaris OS Certifications" target="_blank" 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