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How to pass a user defined argument in scrapy spider

... The above code is only partially working for me. For eg. If I define domain using self.domain, I'm still not able to access it outside the __init__ method. Python throws a not defined error. BTW, why have you omitted the super call? PS. I'm working wit...
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Add a prefix to all Flask routes

...tant to the route at every definition. Is there a way to do this automatically? 10 Answers ...
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Python (and Python C API): __new__ versus __init__

...vs immutable types. __new__ accepts a type as the first argument, and (usually) returns a new instance of that type. Thus it is suitable for use with both mutable and immutable types. __init__ accepts an instance as the first argument and modifies the attributes of that instance. This is inappropr...
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Can I mix MySQL APIs in PHP?

...where. (Not sure whether plain old resources do that, but objects can actually take advantage of RAII to a not-insignificant degree.) – cHao Jul 5 '13 at 23:54 ...
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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...相关的消息组件进行交互,能异步则异步,分清楚数据流的主流程和副流程,主副是异步的,比如记录日志可以是异步操作的,增加整个系统的可用性。 当然在异步处理中,为了确保数据得到接收或者处理,往往需要确认机...
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国际 C 语言混乱代码大赛结果 - 创意 - 清泛网 - 专注C/C++及内核技术

...了一个无整数的 MD5 程序,Don Yang 写了一个有海星图案的文本编码器。侯应该是第 4 回获奖了,Don Yang 应是第 7 回。 虽然主办方目前还没有公布这次比赛的源码,但可以围观他俩之前的作品。 Best self documenting program (2011/hou/hou...
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千万别惹程序员 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术

...通过某些路口时,被摄像头捕捉到你的车牌,通过OCR变成文本,然后插入数据库,于是,上图的这个车牌就成了SQL注入。(不要以为车牌的OCR技术还不行,这项目技术已经非常成熟了,无论是国内还是国外)。这张图片就如同“...
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xpath路径表达式笔记 - C/C++ - 清泛网 - 专注C/C++及内核技术

... - element(元素节点) - attribute(属性节点) - text (文本节点) - namespace (名称空间节点) - processing-instruction (处理命令节点) - comment (注释节点) - root (根节点) xpath可以用来选择这7种节点。不过,下面...
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VC 对话框背景色覆盖CEdit背景色的解决方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...OR_MSGBOX 消息框 CTLCOLOR_SCROLLBAR 滚动条 CTLCOLOR_STATIC 静态文本 当然也可以对指定ID的单个控件进行特殊设置: if(pWnd->GetDlgCtrlID() == IDC_STATIC1) ... MFC 对话框 背景色 CEdit
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快速删除代码中残留的行号、多余字符 - 杂谈 - 清泛网 - 专注C/C++及内核技术

...后一个按钮重复直至完成。 至此,问题解决。实际上文本操作的一些重复的劳动都可以利用宏录制来完成。快速删除 残留行号 多余字符