Mac OS X comes with Python 2.7 out of the box.

You do not need to install or configure anything else to use Python 2. Theseinstructions document the installation of Python 3.

喜欢通过终端访问更传统的Unix工具包的Mac用户（大部分是程序员），都会选择安装Xcode IDE的可选命令行工具子部分，也就是Command Line Tools。. 从MacOS High Sierra，Sierra，OS X El Capitan，Yosemite，Mavericks开始，无需先安装整个Xcode软件包，也无需登录开发人员帐户，就可以单独安装Command Line Tools。. A pop-up window with various developer tools will appear. Scroll the the appropriate version of Command Line Tools for the version of OS X you are running. I am running OS X 10.9, so I scrolled to Command Line Tools (OS X 10.9) for Xcode - September 2014 (dated September 1, 2014) and clicked on the + to disclose the link. ‎Xcode includes everything developers need to create great applications for Mac, iPhone, iPad, Apple TV, and Apple Watch. Xcode provides developers a unified workflow for user interface design, coding, testing, and debugging. The Xcode IDE combined with the Swift programming language make developing.

The version of Python that ships with OS X is great for learning, but it’s notgood for development. The version shipped with OS X may be out of date from theofficial current Python release,which is considered the stable production version.

Check whether the Xcode command line tools are installed on your Mac. Start Xcode on the Mac. Choose Preferences from the Xcode menu.; In the General window, click the Locations tab.; On the Location window, check that the Command Line Tools option shows the Xcode version (with which the Command Line Tools were installed). This means that the Xcode Command Line Tools are already. Install the optional XCode command line tools top In more recent versions of XCode, an extra step may need to be taken to install the command line tools. Before you start writing and compiling your own code, it's a good idea to launch the XCode App, and opt in for any queries to install additional tools, or command line utilities.

Doing it Right¶

Let’s install a real version of Python.

Before installing Python, you’ll need to install GCC. GCC can be obtainedby downloading Xcode, the smallerCommand Line Tools (must have anApple account) or the even smaller OSX-GCC-Installerpackage.

Note

If you already have Xcode installed, do not install OSX-GCC-Installer.In combination, the software can cause issues that are difficult todiagnose.

Note

If you perform a fresh install of Xcode, you will also need to add thecommandline tools by running xcode-select--install on the terminal.

While OS X comes with a large number of Unix utilities, those familiar withLinux systems will notice one key component missing: a package manager.Homebrew fills this void.

To install Homebrew, open Terminal oryour favorite OS X terminal emulator and run

The script will explain what changes it will make and prompt you before theinstallation begins.Once you’ve installed Homebrew, insert the Homebrew directory at the topof your PATH environment variable. You can do this by adding the followingline at the bottom of your ~/.profile file

If you have OS X 10.12 (Sierra) or older use this line instead

Now, we can install Python 3:

This will take a minute or two.

Pip¶

Homebrew installs pip pointing to the Homebrew’d Python 3 for you.

Working with Python 3¶

At this point, you have the system Python 2.7 available, potentially theHomebrew version of Python 2 installed, and the Homebrewversion of Python 3 as well.

will launch the Homebrew-installed Python 3 interpreter.

will launch the Homebrew-installed Python 2 interpreter (if any).

will launch the Homebrew-installed Python 3 interpreter.

If the Homebrew version of Python 2 is installed then pip2 will point to Python 2.If the Homebrew version of Python 3 is installed then pip will point to Python 3.

The rest of the guide will assume that python references Python 3.

Pipenv & Virtual Environments¶

The next step is to install Pipenv, so you can install dependencies and manage virtual environments.

A Virtual Environment is a tool to keep the dependencies required by different projectsin separate places, by creating virtual Python environments for them. It solves the“Project X depends on version 1.x but, Project Y needs 4.x” dilemma, and keepsyour global site-packages directory clean and manageable.

For example, you can work on a project which requires Django 1.10 while alsomaintaining a project which requires Django 1.8.

So, onward! To the Pipenv & Virtual Environments docs!

This page is a remixed version of another guide,which is available under the same license.

Check tutorial of How to Install Command Line Tools in Mac OS X (Without Xcode)

So after a lot of requests from our users here is a guide about How to Install Command Line Tools in Mac OS X (Without Xcode).

Mac users who prefer a more traditional Unix toolkit accessible to them through the Terminal may want to install the optional Command Line Tools subsection of the Xcode IDE. From macOS High Sierra, Sierra, OS X El Capitan, Yosemite, Mavericks and above, this is now easily possible directly and without installing the full Xcode package first, no developer account is required either.

The Command Line Tool package gives Mac terminal users many commonly used tools, utilities and compilers, including make, GCC, clang, perl, svn, git, size, strip, strings, libtool, cpp, wat and many other useful commands that are usually found in standard linux installations. We’ve included the full list of new binaries available through the command line toolkit below for those interested, or you can see for yourself after installing the package, which we’ll cover here.

This guide targets macOS 10.13 High Sierra, 10.12 Sierra, OS X 10.11 El Capitan, OS X 10.10 Yosemite and Mac OS X 10.9, and newer releases. Mac users with earlier versions of OS X can continue to install Command Line Tools and gcc (without Xcode) directly through a package installer available from the Apple Developer website, as described here.

Install Command Line Tools in Mac OS X

1. Launch the Terminal, found in / Applications / Utilities /
2. Type the following command string:

xcode-select –install

3. A software update pop-up will appear asking, “The xcode-select command requires the command line developer tools. Would you like to install the tools now? “choose to confirm by clicking” Install “and then agree to the Terms of Service when prompted (feel free to read them thoroughly, we’re here)
4. Wait for the Command Line Tools pack download to complete, it will be around 130MB and install quite quickly depending on your connection speed

The installer will disappear on its own when it finishes, and you can then confirm everything is working by using one of the commands just installed, such as gcc, git, svn, rebase, make, ld, otool, nm, whatever you do want from the list below. Assuming the installation was uninterrupted, the command will run as expected. This also means that you can compile and install things directly from the source code without having to use a package manager. Have fun with your new unix command line toolkit!

What gets installed with command line tools and where

For those interested in the details of what is installed on their Mac and where it is going, the full command line package with toolkit is placed in the following directory:

/ Library / Developer / CommandLineTools /

You can browse that directory if you wish, or you can just know about it in case you want to change or modify a package at a later date.

Note that the directory is the Mac OS root / Library, not a user ~ / Library directory.

If you’d like to see the 61 new commands available to you, they’re all in / Library / Developer / CommandLineTools / usr / bin / but we’ve also listed them alphabetically below for convenience:

arasasabisonBuildStringsc c89c99ccclangclang ++ ++ ++ g ++ cmpdylibcodesign_allocateCpMaccppctagsctf_insertDeRezdsymutildwarfdumpdyldinfoflexflex gatherheaderdocgccgcovGetFileInfogitgit-cvsservergit-receive-packgit-shellgit-upload archivegit-upload packgm4gnumakegperfhdxml2manxmlheaderdoc2htmlindentinstall_name_toolldlexlibtoollipolldblorderm4makeMergePefmigmkdepMvMacnasmndisasmnmnmeditotoolpagestuffprojectInforanlibrebaseredo_prebindingResMergerresolveLinksRezRezDetRezWackrpcgensegeditSetFilesizeSplitForksstringsstripsvnsvnadminsvndumpfiltersvnlooksvnrdumpsvnservesvnsyncsvnversionunifdefunifdefallUnRezWackunwinddumpwhatxml2manyacc

Troubleshooting “currently unavailable” error

Are you getting an error message saying “Cannot install the software because it is currently not available from the software update server”? Well, you’re in luck because that error message probably indicates that you already have Xcode installed on the Mac.

From Mac OS X 10.9 and above: If Xcode is already installed in Mac OS X, Command Line Tools will also be installed (you can check by trying to run gcc or make from the terminal). Accordingly this tutorial is intended for users who do not want to install the wider Xcode development package and instead only want to install the command line tools. Yes, that means you can uninstall the entire Xcode app and install the command line tools only if you wish, as for many users and sysadmins this is the only reason they have Xcode installed to begin with.

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How to Install Command Line Tools in Mac OS X (Without Xcode): FAQ

Tutorial Summary: How to Install Command Line Tools in Mac OS X (Without Xcode)

Mac Command Line Tools For Xcode Download

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Command Line Tools For Xcode 11.6

How to Install Command Line Tools in Mac OS X (Without Xcode) Tutorial: final note

Mac Xcode Command Line Tools Mojave

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