<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[stocker0073的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/stocker0073</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; stocker0073]]></copyright><item><title><![CDATA[抽取CLOB字段中XML的特定元素的VALUE值]]></title><link>https://blog.youkuaiyun.com/stocker0073/article/details/136985422</link><guid>https://blog.youkuaiyun.com/stocker0073/article/details/136985422</guid><author>stocker0073</author><pubDate>Sun, 24 Mar 2024 12:34:00 +0800</pubDate><description><![CDATA[获取CLOB字段中XML文件的特定元素值。]]></description><category></category></item><item><title><![CDATA[ORA-04021 Timeout occurred while waiting to lock object]]></title><link>https://blog.youkuaiyun.com/stocker0073/article/details/136984696</link><guid>https://blog.youkuaiyun.com/stocker0073/article/details/136984696</guid><author>stocker0073</author><pubDate>Sun, 24 Mar 2024 12:05:19 +0800</pubDate><description><![CDATA[ORA-04021 处理方法]]></description><category></category></item><item><title><![CDATA[Python 3.6 连接 MySQL DB]]></title><link>https://blog.youkuaiyun.com/stocker0073/article/details/79822808</link><guid>https://blog.youkuaiyun.com/stocker0073/article/details/79822808</guid><author>stocker0073</author><pubDate>Wed, 04 Apr 2018 22:21:10 +0800</pubDate><description><![CDATA[连接MySQL DB,需引入pymysql (由于Python3 不支持 MySQL-Python ),pip install pymysqlimport pymysql
import  pymysql.cursors
connection = pymysql.connect(host='localhost',  
                             user='root',...]]></description><category></category></item><item><title><![CDATA[Python学习笔记 -- pandas (二)]]></title><link>https://blog.youkuaiyun.com/stocker0073/article/details/79180618</link><guid>https://blog.youkuaiyun.com/stocker0073/article/details/79180618</guid><author>stocker0073</author><pubDate>Sat, 27 Jan 2018 15:14:01 +0800</pubDate><description><![CDATA[使用 read_csv 读取文件后，随机抽取三行数据并读出来]]></description><category></category></item><item><title><![CDATA[Python学习笔记 -- pandas]]></title><link>https://blog.youkuaiyun.com/stocker0073/article/details/79167226</link><guid>https://blog.youkuaiyun.com/stocker0073/article/details/79167226</guid><author>stocker0073</author><pubDate>Thu, 25 Jan 2018 22:41:29 +0800</pubDate><description><![CDATA[1.引入 pandas 
   import pandas as pd

2.从csv文档读入数据 read_csv：
     In[13],直接读出文档；In[24],读文档时，分列并命名列名


3.删除重复项 drop_duplicates




4.截取字符串slice
   slice(star,end)


5.分列 split 及 重新设置Colu]]></description><category></category></item><item><title><![CDATA[使用Ajax对用户合法性做判断]]></title><link>https://blog.youkuaiyun.com/stocker0073/article/details/7033894</link><guid>https://blog.youkuaiyun.com/stocker0073/article/details/7033894</guid><author>stocker0073</author><pubDate>Fri, 02 Dec 2011 10:18:37 +0800</pubDate><description><![CDATA[在用户登录系统时，有时需要先对用户的合法性进行判断，这样就可
以分清楚是用户的用户名错误还是密码错误。使用Ajax无疑是最佳的选择。
         1、在输入框中进行设置：
                     
                         添加一个ID和触动函数的动作。
          2、开始编写usercheck()这个函数：]]></description><category></category></item><item><title><![CDATA[正则表达式语法]]></title><link>https://blog.youkuaiyun.com/stocker0073/article/details/6975487</link><guid>https://blog.youkuaiyun.com/stocker0073/article/details/6975487</guid><author>stocker0073</author><pubDate>Wed, 16 Nov 2011 08:48:45 +0800</pubDate><description><![CDATA[正则表达式语法
一个正则表达式就是由普通字符（例如字符 a 到 z）以及特殊字符（称为元字符）组成的文字模式。该模式描述在查找文字主体时待匹配的一个或多个字符串。正则表达式作为一个模板，将某个字符模式与所搜索的字符串进行匹配。
这里有一些可能会遇到的正则表达式示例：



Visual Basic Scripting Edition
VBScript
匹配


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