<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[moluoyu的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/moluoyu</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; moluoyu]]></copyright><item><title><![CDATA[win10 停止mysql服务停止后再次启动报错。]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/120914880</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/120914880</guid><author>moluoyu</author><pubDate>Fri, 22 Oct 2021 23:16:52 +0800</pubDate><description><![CDATA[mysql:8.0.23

参考：本地计算机上的mysql服务启动停止后,某些服务在未由其他服务或程序使用时将自动停止

]]></description><category></category></item><item><title><![CDATA[MySQL8.0.忘记密码解决报 ERROR 1045 (28000): Access denied for user ‘root‘@‘localhost‘ (using password: YES)]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/120914753</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/120914753</guid><author>moluoyu</author><pubDate>Fri, 22 Oct 2021 22:48:39 +0800</pubDate><description><![CDATA[参考此博客完美解决此问题：

MYSQL 8.0 忘记密码

]]></description><category></category></item><item><title><![CDATA[dbeaver21 连接mysql数据库显示不全]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/120121014</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/120121014</guid><author>moluoyu</author><pubDate>Sun, 05 Sep 2021 20:48:51 +0800</pubDate><description><![CDATA[查看当前连接数据库

&gt; select database();

![(https://img-blog.csdnimg.cn/340beb6692e4413ead01b1e13ad8a0ee.png)

]]></description><category></category></item><item><title><![CDATA[在jenken的构建shell中，提示source: not found错误]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/107924960</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/107924960</guid><author>moluoyu</author><pubDate>Mon, 10 Aug 2020 23:59:05 +0800</pubDate><description><![CDATA[+ source tutorial-env/bin/activate
/tmp/jenkins6856208610051322839.sh: 5: /tmp/jenkins6856208610051322839.sh: source: not found
Build step 'Execute shell' marked build as failure
Finished: FAILURE

经过搜索shell 中source: not found错误
感觉是同一个问题，于是在shell中执行如下命令：
 ]]></description><category></category></item><item><title><![CDATA[python3 中对于协程(coroutine)中async,await 相关概念的理解.]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/106989877</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/106989877</guid><author>moluoyu</author><pubDate>Sat, 27 Jun 2020 23:15:30 +0800</pubDate><description><![CDATA[这里写目录标题一级目录二级目录三级目录
一级目录
二级目录
三级目录
参考(有前后顺序):
对python async与await的理解
轻松理解 Python 中的 async await 概念

]]></description><category></category></item><item><title><![CDATA[python 中,空的list是否等于None]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/106609501</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/106609501</guid><author>moluoyu</author><pubDate>Sun, 07 Jun 2020 23:53:56 +0800</pubDate><description><![CDATA[文章目录
最近在写测试用例过程中,在判断一个list为空时,随手写下了如下代码:
if listinstance is None:
	#do something 
	pass

发现当list为空时,程序死活进步了后面的处理语句,于是发现了以下先关文章:
Why does “[] == False” evaluate to False when “if not []” succeeds?

简单来说就是 [] != None, 但是在if语句中,当做真假来判断时是为False:


...]]></description><category></category></item><item><title><![CDATA[python3爬虫 pyquery疑问_1传入html文本比直接传入字符串稳定(待更新)_20200531]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/106462902</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/106462902</guid><author>moluoyu</author><pubDate>Sun, 31 May 2020 22:35:51 +0800</pubDate><description><![CDATA[爬虫中遇到的问题一级目录二级目录三级目录
一级目录
二级目录
三级目录

]]></description><category></category></item><item><title><![CDATA[Ubuntu 18.04 jupyternotebook中py2与py3共存的方法]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/103625379</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/103625379</guid><author>moluoyu</author><pubDate>Fri, 20 Dec 2019 00:01:59 +0800</pubDate><description><![CDATA[文章目录直接在在Jupyter中安装Python第三方包方法

py2与py3在jupyter notebook中共存的方法
已经安装python2和python3，jupyter notebook.
如何查看：

python2 在执行python2 -m pip install ipykernel 时显示找不到pip
使用命令:
 apt-get install python-pip

直接在...]]></description><category></category></item><item><title><![CDATA[Ubuntu 18.04 各种问题大杂烩]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/103413968</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/103413968</guid><author>moluoyu</author><pubDate>Thu, 05 Dec 2019 22:57:06 +0800</pubDate><description><![CDATA[Contents在Ubuntu 18.04 下安装mysql，没有初始密码，重设root密码
在Ubuntu 18.04 下安装mysql，没有初始密码，重设root密码
在Ubuntu 18.04 下安装mysql，没有初始密码，重设root密码
sudo cat /etc/mysql/debian.cnf

用以上user 和 key 登录:
修改密码
use mysql;
// 下面这句命令...]]></description><category></category></item><item><title><![CDATA[Python编程从入门到实践 2016年7月第一版 (ing)]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/94364282</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/94364282</guid><author>moluoyu</author><pubDate>Sun, 01 Sep 2019 23:29:59 +0800</pubDate><description><![CDATA[Contents

容易忽略的小问题
我们可以用import 文件名的方式把它导入自己的新文件不过我们要注意创建的模块要符合命名规范，
比如首字母不能是数字等.
像如下图这种命令方式不可取.

test2.py的内容如下:

def test():
    print("hell")


修改成如下名字后,导入自己写的模块成功运行.


...]]></description><category></category></item><item><title><![CDATA[Ubuntu下pycharm软件使用相关问题]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/100149424</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/100149424</guid><author>moluoyu</author><pubDate>Fri, 30 Aug 2019 00:28:44 +0800</pubDate><description><![CDATA[Contents
https://blog.youkuaiyun.com/qq_36076717/article/details/79706342

]]></description><category></category></item><item><title><![CDATA[Pycharm完整中文教程]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/97833078</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/97833078</guid><author>moluoyu</author><pubDate>Tue, 30 Jul 2019 23:27:51 +0800</pubDate><description><![CDATA[感谢原博主的辛勤劳动,请移步原博客对博主进行无私的赞美

]]></description><category></category></item><item><title><![CDATA[Ubuntu下解压zip文件出现中文名乱码情况]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/97695346</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/97695346</guid><author>moluoyu</author><pubDate>Mon, 29 Jul 2019 23:43:42 +0800</pubDate><description><![CDATA[乱码原因
其实，并不是所有zip文件解压后都是乱码的，只有windows下压缩的zip在ubuntu中会出现这种情况。
其实就是windows和ubuntu下压缩的编码格式不同。windows下的编码格式为GBK，Ubuntu下的为UTF-8.
解决方法
-O指定字符编码 ,-d 解压到 后面这个目录下:
unzip -O GBK  配套资源翻译.zip -d 配套资源翻译

解压很复杂的中文名文...]]></description><category></category></item><item><title><![CDATA[各种命令（ing）]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/90084094</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/90084094</guid><author>moluoyu</author><pubDate>Fri, 10 May 2019 21:18:25 +0800</pubDate><description><![CDATA[content基本命令篇
基本命令篇

软连接与硬连接
软链接和硬链接到底有啥作用和区别
根据评论区提示：验证修改硬连接是否能修改源文件：

[root@vmax0709 test]# ln a.txt a.hard
[root@vmax0709 test]# ls
a  a.hard  a.txt
[root@vmax0709 test]# ln -s a.txt a.soft
[root@vm...]]></description><category></category></item><item><title><![CDATA[Ubuntu18.04 个人配置指南(随缘更新中)]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/88936934</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/88936934</guid><author>moluoyu</author><pubDate>Sun, 31 Mar 2019 22:16:37 +0800</pubDate><description><![CDATA[因为在ubuntu下安装软件的教程有很多，而卸载软件的教程一般没有涉及。
因此记录下一些软件的卸载命令：
OS：Ubuntu 18.04.1 LTS

Visual studio code

sudo apt-get purge code


telegram


https://askubuntu.com/questions/425716/how-to-install-telegram#


安...]]></description><category></category></item><item><title><![CDATA[在ubuntu系统下安装windows10系统（非新手向，主要记录过程中的一些问题）]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/88879048</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/88879048</guid><author>moluoyu</author><pubDate>Sat, 30 Mar 2019 19:18:31 +0800</pubDate><description><![CDATA[前言
https://blog.youkuaiyun.com/donglany/article/details/79961938

]]></description><category></category></item><item><title><![CDATA[Nvidia官网查询显卡详细参数]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/88764351</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/88764351</guid><author>moluoyu</author><pubDate>Sat, 23 Mar 2019 17:10:15 +0800</pubDate><description><![CDATA[准备给多年的老伙计笔记本买个外接显示器，想看一下最大我的显卡能支持多大的分辨#率。突然发现在官网上要找到对应的网址入口还真容易。于是将下面这个网址记录如下：
https://www.geforce.com/hardware/notebook-gpus#
ps:如果有哪位大佬知道如何从官网找到上面那个界面的还请告知我。
邮箱：994252012@qq.com

...]]></description><category></category></item><item><title><![CDATA[Microsoft SQL Server Management Studio ------- 附加与分离数据库失败]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/87349491</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/87349491</guid><author>moluoyu</author><pubDate>Fri, 15 Feb 2019 11:29:40 +0800</pubDate><description><![CDATA[
一种是：低版本的数据库备份可以在同级和高版本上附加。但是高版本数据库备份不能在低版本上附加。因为高版本对低版本兼容，低版本不对高版本兼容（也就是向下兼容）。只有向下兼容，向上的话要转换
https://blog.youkuaiyun.com/weixin_38004638/article/details/80242405
文件权限问题
分离情况参考（https://blog.youkuaiyun.com/qq_3223...]]></description><category></category></item><item><title><![CDATA[Ananconda jupyter notebook 相关配置(文章结构待修改中ing)]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/86736051</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/86736051</guid><author>moluoyu</author><pubDate>Fri, 01 Feb 2019 09:50:22 +0800</pubDate><description><![CDATA[打开 Anaconda Prompt
输入命令 jupyter notebook –generate-config输入命令 jupyter notebook –generate-config
打开C:/Users/你的账户/.jupyter/jupyter_notebook_config.py打开C:/Users/你的账户/.jupyter/jupyter_notebook_config.py
...]]></description><category></category></item><item><title><![CDATA[协方差与相关系数的理解(转载)]]></title><link>https://blog.youkuaiyun.com/moluoyu/article/details/84718853</link><guid>https://blog.youkuaiyun.com/moluoyu/article/details/84718853</guid><author>moluoyu</author><pubDate>Sun, 02 Dec 2018 16:26:24 +0800</pubDate><description><![CDATA[
易错点
协方差为0 只能说明线性不相关，而不能说明没有其他的相关关系，因此不一定独立。
协方差矩阵的对角线就是各个维度上的方差，下面我们依次计算

主要解释了有了协方差为什么还要用相关系数去描述变量之间的关系。
http://blog.sina.com.cn/s/blog_6aa3b1010102xkp5.html

...]]></description><category></category></item></channel></rss>