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python pickle module

Persistence means retaining an object, even between multiple executions of the same program. Through this article, you will get an overview of the various persistence mechanisms for Python objects, from relational databases to Python's pickle and other mechanisms. In addition, it will also give you a deeper understanding of Python's object serialization capabilities.

Dec 16, 2016 am 11:36 AM

pickle

Microsoft Sql Server Error 5123 Attached Database Error

Microsoft Sql Server may cause this result by reinstalling the system and renaming the host name or logging in with Windows identity when attaching the database. This error may be reported under Vista or Windows 7.

Dec 16, 2016 am 11:05 AM

Solution to error 5123 when attaching database in sql2008

Today I reinstalled the database on my home computer. When attaching an existing database, a 5123 error occurred.

Dec 16, 2016 am 10:57 AM

Correct solution to error 5123 in SQL Server attached database

Because I have a database tutorial based on SQL Server 2005, the sample database used in it is AdventureWorks for SQL Server 2005, and my machine is installed with SQL Server 2008, and the sample database is AdventureWorks for SQL Server 2008. At first I thought that the database structures of the sample databases AdventureWorks for SQL Server 2005 and AdventureWorks for SQL Server 2008 should be similar. However, during the exercise, I discovered two

Dec 16, 2016 am 10:49 AM

Three ways to permanently add environment variables in Linux

This article introduces: Three ways to permanently add environment variables in Linux

Dec 15, 2016 pm 05:04 PM

Summary of methods for adding environment variables in Linux

Linux is not sensitive to whether environment variables have double quotes or whether variables are enclosed in {}. I took a quick look at the profile file and it seems that if the system finds that a variable does not have quotes, it will automatically add it.

Dec 15, 2016 pm 05:00 PM

linux environment variables

Several methods for setting Linux environment variables

Environment variables are closely related to Shell. A Shell is started after the user logs in to the system. For Linux, this is usually bash, but it can also be reset or switched to other shells. For UNIX, probably CShelll. Environment variables are set through Shell commands, and the set environment variables can be used by all programs run by the current user. For the shell program bash, you can access the corresponding environment variables through variable names, and set the environment variables through export. Below are several examples to illustrate.

Dec 15, 2016 pm 04:57 PM

How to set and view Linux environment variables

This article introduces: How to set and view Linux environment variables

Dec 15, 2016 pm 04:54 PM

Environment variable files and configuration in Linux

Environment variables in Linux include system-level and user-level. System-level environment variables are system variables that every user who logs in to the system must read, while user-level environment variables are environment variables that are loaded when the user uses the system. Therefore, the files that manage environment variables are also divided into system level and user level. Here is a relatively clear introduction to the file found on the Internet.

Dec 15, 2016 pm 04:52 PM

Some thoughts on solving Oracle Chinese garbled characters under Linux

After recently installing Oracle 10gR2 on Linux, I encountered the problem of garbled character sets. I looked for it on the Internet before, and then let it go after solving it. This time I encountered such a problem again, so I took it seriously. I took some time to test it. After some testing, the problem has been solved. Now I will record the problems and solutions I encountered so that I can find them later.

Dec 15, 2016 pm 04:46 PM

Solution to the problem of Chinese garbled characters under Linux

The files transferred from Windows are garbled when copied to Linux. We want to display Chinese in Linux. What should we do? We first test whether the Chinese in Linux can be displayed normally? Answer: yes. So the problem is more obvious. The format copied from Windows cannot be displayed, indicating that the formats supported by Windows and Linux are different.

Dec 15, 2016 pm 04:44 PM

linux Chinese garbled code

How to solve Chinese garbled characters in Linux

When you first start using the Linux system, everyone will encounter a problem, that is, when the terminal input command is echoed, the Chinese characters are displayed as garbled characters. Why does such a problem occur? When such a problem occurs, how should we solve it? What's the solution? Today, the editor will tell you about the solution to Chinese garbled characters in Linux.

Dec 15, 2016 pm 04:43 PM

linux Chinese garbled code

Solve the problem of Chinese garbled characters in Linux

This article introduces: Solving the problem of Chinese garbled characters in Linux

Dec 15, 2016 pm 04:36 PM

linux Chinese garbled code

Linux terminal Chinese display garbled characters

This is a problem that worries domestic Linux users. Since most Linux distributions are mainly in English, and English is better than Chinese in terms of versatility and stability, and there are fewer strange bugs. Therefore, it is strongly recommended to use the English system.

Dec 15, 2016 pm 04:34 PM

linux Chinese garbled code