Switch between multiple versions of Python on Mac and python on mac
Python 2.x is installed on Mac. Sometimes Python 3.x is used for development, but Python 2.x cannot be deleted, which may cause system instability. Therefore, multiple versions of Python must be installed.
1. Install Python 3.x. I have installed Python 3.6.1;
2. Open the terminal and enter sudo vi ~ /. Bashrc;
3. On the top of the pop-u
First, preparewampserver2.5PHP5 versions php5.2 to php5.6apache2.2 and apache2.4Second, installationThe first successful installation of wampserver2.5, if the installation is not successful, many are VC11 not installed well. To its official website to download, click on the download if not installed will download a TXT file, there is a VC download address. I am directly download a apache2.2 installation program (note that the installation will wampse
This article describes how to install PHP, mysql, and apache in WampServer. if you want to debug a PHP program, some functions used in this program cannot be used in earlier versions. Therefore, you can only create a later version of php.
As Web developers, installing different versions of php on machines, apache and mysql are sometimes necessary.
The following are
PHP of different
Json versions earlier than php5.4 do not support solutions that do not escape Chinese content ,. PHP 5.4 or earlier versions of json do not support the solution of Chinese without escaping content. This article describes how to solve the problem that PHP 5.4 or earlier versions of json do not support Chinese without escaping content. The solution for json
Now we can select a lot of browsers, so there are also a wide variety of browser environments, the same browser also contains a variety of different versions, there are also differences between different versions of the rendering method, i'm afraid they support different HTML5 and CSS3 features. This situation causes Web developers to face a large number of browser types when developing websites. If the dev
Since the advent of jquery, there has been a growing number of versions, and the new version of the jquery website is constantly being updated and released, but we have already used previous versions of jquery, such as 1.3.X, 1.4.X, 1.5.X, 1.6.2, and so on.Before the modification of the foreground page, I encountered such problems, I use the latest jquery version, before the program with the old jquery libr
There are two main toolkits for working with Excel in Java: JXL and POI. JXL can only manipulate Excel 95, 97, or 2000, which is the. xls suffix of Excel, which the individual believes is already obsolete, and that the POI can manipulate Excel 95 and later versions of Excel with the suffix. xls and. xlsx two formats.POI full name Poor obfuscation implementation, literal translation "poor fuzzy implementation", of course, is not pathetic and very pract
If you want to check which version of your exchange is, there are many methods. Generally, you can open the exchange console to check other methods. Here we will introduce a more convenient method, enter the following command under the Exchange command line tool: Get-exchangeserver | format-list name, edition, admindisplayversionThe result is as follows:650) This. width = 650; "Title =" 5} 6 @ 7k30s {NZ % 6s4 'y4de3k "style =" border-top: 0px; border-Right: 0px; border-bottom: 0px; border-left:
hbase tables are grouped by a column family named colomn family, and data is stored by column family on disks. For this reason, therefore, when defining an hbase table, apart from defining the table name, you must also define the column family. Traditional databases do not have column families.Column ID: data in a column family is described by a colomn qualifier. Column identifiers can be dynamically defined when you define a table or when saving data. This concept does not apply to databases.V
Abstract:
Recently, I saw a canary version of chrome on the Internet. The first time I saw this version, I learned about various versions of chrome. Chrome is the best tool for front-end development, it is not only its debugging tool, but also its compatibility with HTML5/css3. Next we will introduce various versions of chrome to let more people know about it.Chromium:
Chromium is an open-source project lau
I have summarized some debugging and release problems.
In VC, when the entire project is large, the software is often in the release state that can run in the debug state.
. Developers usually develop software in the debug state.
It took us one or two months of hard work to prepare and release the software with confidence. To avoid unnecessary issues
We 'd better perform the following checks:
1. Often test the two software versions.
2. Do not easily
Fedora, OpenSUSE, and Ubuntu are the three most influential community Linux versions. They are currently in beta testing and may be released at the end of the fall. The new functions of the three versions of Linux are tested.The GNOME 2.24 graphic environment of Linux of the three versions has the Nautilus File Manager and supports the label-Based Browsing functi
1. Independent installation (relatively cumbersome and not recommended)
Use IE6 green, IE7 standalone, and IE8 installation files to install their respective browsers.
Installation sequence: 1. IE6 Green 2. IE7 standalone 3. IE8 beta2
Related:
IE6 Green: http://skmode.ys168.com/packed by everplus
IE7 standalone: http://tredosoft.com/IE7_standalone
IE7 XP version: IE7-WindowsXP-x86-enu.exe
Other IE7 versions: Internet Explorer 7
Referen
Tags: invoicing software, invoicing
On the market, we can see that almost every enterprise management software or invoicing software has different versions. Some customers may ask why the same software has to be divided into so many versions? We don't know how to choose any different versions.In fact, enterprises divide the same software into different versions t
Bo main QQ:819594300Blog address:http://zpf666.blog.51cto.com/Have any questions friends can contact Bo Master, Bo Master will help you answer, thank you for your support!Deploying Python multiple Versions using the Pyenv+virtualenv methodPYENVVS virtualenvpyenv is for the Python version of the management, by modifying the way the environment variables implemented;virtualenv is the multi-version management of Python packages, by installing a Python pa
Long time no Update blog, a rare time, a record of today wrote a small tool for the needs of friends reference.In mobile app development, the simultaneous presence of multiple versions of the interface often occurs, and the interface usually supports multiple versions, and there are several ways:1. Differentiate different versions with different pathsSuch as:http
How do I view the version information used by Linux systems? The following article collects and collates some common ways to view Linux system versions. Because there are only Oracle Linux, Centos Linux, Redhat Linux three versions of Linux at hand, such as Debian, Ubuntu and other Linux systems, the following methods are not tested in these versions.1:more/etc/i
new reflective and object-oriented programming interface. NET is designed to be universal enough so that many different high-level languages can be assembled.
What are the. NET Framework versions?
. NET Framework 1.0,. NET Framework 1.1,. NET Framework 2.0,. NET Framework 3.0,. NET Framework 3.5,. NET Framework 4.0.
Overview and selection recommendations for the. NET Framework Versions
NET Framework 1.
1. Application Scenarios
Sometimes we need to run several different versions of Jar packages in a Project to deal with different clusters of versions or other problems. If you choose to implement such a feature in the same project at this time, it is usually possible to select only a lower version of the jar package because they are usually backward-compatible, but this also tends to lose some of the featu
Tags: Develop manual file tell count installation Complete difference MMU Technical supportMySQL's website: http://www.mysql.com/downloads/ There will be several versions of the selection in this download screen. 1. MySQL Community Server Community version, open source is free, but does not provide official technical support.2. MySQL Enterprise Edition is available for a fee and can be tested for 30 days.3. MySQL Cluster Cluster Edition, open source
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