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scrapy xpath抓取节点的文本innerText、innerHTML、outerHTML - 更多技术 -...
scrapy xpath抓取节点的文本innerText、innerHTML、outerHTML假设抓取：<p> xx<b>x< b>< p> 抓取p节点本身，得到的内容：<p>xx<b>x< b>< p>response xpath(& 39; div[@class="question"] div[2] div[2] div[1] p[1]& 39;) extract() 抓 假设抓取：
<p>
xx<b>x</b>
</p>
scra...
xxx.sh: line x: [0: command not found - 脚本技术 - 清泛IT社区，为创新赋能！
由于if [ 后面没有加空格导致的。
if [ xxx ] 表达式前后都要有空格。
Discuz X 首页白板解决之道 - 建站技术 - 清泛IT论坛，有思想、有深度
...法，代码一段段的排查，在合适位置打印特定内容然后exit(0);查看结果，分析出现问题的大致位置。可以毫不夸张地说，排除法能够解决99.99%的疑难杂症。
3、白板的最核心原因是调用函数 ob_end_clean() 函数导致的，先将输出内容...
[es6] import, export, default cheatsheet - 更多技术 - 清泛网 - 专注C/C++及内核技术
[es6] import, export, default cheatsheetimport-export-default-require-commandjs-javascript-nodejs-es6有四种类型的导出：1、命名导出（每个模块可以有多个）2、默认导出（每个模块一个）3、混合命名和默认导出4、循环依赖1 Nameexports ------ lib js ------...
屏幕像素怎么设置成1080X1920? - App应用开发 - 清泛IT社区，为创新赋能！
如题，手机尺寸只能按给定的使用吗？1、网页端的分辨率只是预览用的，实际分辨率以测试设备为准：
2、手机/平板分辨率往往是固定的。但是模拟器一般来说是可以设置分辨率，详见：https://www.fun123.cn/reference/ ... 5%E4%BD%BF%...
Do regular expressions from the re module support word boundaries (\b)?
While trying to learn a little more about regular expressions, a tutorial suggested that you can use the \b to match a word boundary. However, the following snippet in the Python interpreter does not work as expected:
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Class method decorator with self arguments?
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A more concise example might be as follows:
#/usr/bin/env python3
from functools import wraps
def wrapper(method):
@wraps(method)
def _impl(self, *method_args, **method_kwargs):
method_output = method(self, *method_args, **...
How do I force make/GCC to show me the commands?
...be it is make??) to show me the actual compiler and linker commands it is executing.
7 Answers
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How to completely remove node.js from Windows
... when trying to add modules through npm. I've seen solutions to this for OSX and Linux, but couldn't find anything for Windows. I'm running Windows 7 64-bit.
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How can I check if a string is null or empty in PowerShell?
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@pencilCake Yes, that what I'm saying and the example above shows it in action. What the test won't check for is IsNullOrWhitespace().
– Keith Hill
Dec 7 '12 at 16:06
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