- Download Python 2.7
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- Download Python 2.7 On Mac Download
Bob Savage <bobsavage@mac.com>
Python on a Macintosh running Mac OS X is in principle very similar to Python onany other Unix platform, but there are a number of additional features such asthe IDE and the Package Manager that are worth pointing out.
Python 2.7.16 is a bugfix release in the Python 2.7 series. Note Attention macOS users: As of 2.7.16, all current python.org macOS installers ship with builtin copies of OpenSSL and Tcl/Tk 8.6. Note: A bugfix release, 2.7.6, is currently available.Its use is recommended. Python 2.7 was released on July 3rd, 2010. Python 2.7 is scheduled to be the last major version in the 2.x series before it moves into an extended maintenance period. Python 2.7.10 - May 23, 2015. Download Mac OS X 32-bit i386/PPC installer; Download Mac OS X 64-bit/32-bit installer; Python 3.4.3 - Feb. Download Mac OS X 32-bit i386/PPC installer; Download Mac OS X 64-bit/32-bit installer; Python 2.7.9 - Dec. Download Mac OS X 32-bit i386/PPC installer; Download Mac OS X 64-bit/32-bit.
The Mac-specific modules are documented in Mac OS X specific services.
Python on Mac OS 9 or earlier can be quite different from Python on Unix orWindows, but is beyond the scope of this manual, as that platform is no longersupported, starting with Python 2.4. See http://www.cwi.nl/~jack/macpython forinstallers for the latest 2.3 release for Mac OS 9 and related documentation.
4.1. Getting and Installing MacPython¶
Mac OS X 10.8 comes with Python 2.7 pre-installed by Apple. If you wish, youare invited to install the most recent version of Python from the Python website(https://www.python.org). A current “universal binary” build of Python, whichruns natively on the Mac’s new Intel and legacy PPC CPU’s, is available there.
What you get after installing is a number of things:
A
MacPython2.7
folder in yourApplications
folder. In hereyou find IDLE, the development environment that is a standard part of officialPython distributions; PythonLauncher, which handles double-clicking Pythonscripts from the Finder; and the “Build Applet” tool, which allows you topackage Python scripts as standalone applications on your system.A framework
/Library/Frameworks/Python.framework
, which includes thePython executable and libraries. The installer adds this location to your shellpath. To uninstall MacPython, you can simply remove these three things. Asymlink to the Python executable is placed in /usr/local/bin/.
The Apple-provided build of Python is installed in/System/Library/Frameworks/Python.framework
and /usr/bin/python
,respectively. You should never modify or delete these, as they areApple-controlled and are used by Apple- or third-party software. Remember thatif you choose to install a newer Python version from python.org, you will havetwo different but functional Python installations on your computer, so it willbe important that your paths and usages are consistent with what you want to do.
IDLE includes a help menu that allows you to access Python documentation. If youare completely new to Python you should start reading the tutorial introductionin that document.
If you are familiar with Python on other Unix platforms you should read thesection on running Python scripts from the Unix shell.
4.1.1. How to run a Python script¶
Your best way to get started with Python on Mac OS X is through the IDLEintegrated development environment, see section The IDE and use the Help menuwhen the IDE is running.
If you want to run Python scripts from the Terminal window command line or fromthe Finder you first need an editor to create your script. Mac OS X comes with anumber of standard Unix command line editors, vim andemacs among them. If you want a more Mac-like editor,BBEdit or TextWrangler from Bare Bones Software (seehttp://www.barebones.com/products/bbedit/index.html) are good choices, as isTextMate (see https://macromates.com/). Other editors includeGvim (http://macvim.org) and Aquamacs(http://aquamacs.org/).
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To run your script from the Terminal window you must make sure that/usr/local/bin
is in your shell search path.
To run your script from the Finder you have two options:
Drag it to PythonLauncher
Select PythonLauncher as the default application to open yourscript (or any .py script) through the finder Info window and double-click it.PythonLauncher has various preferences to control how your script islaunched. Option-dragging allows you to change these for one invocation, or useits Preferences menu to change things globally.
4.1.2. Running scripts with a GUI¶
With older versions of Python, there is one Mac OS X quirk that you need to beaware of: programs that talk to the Aqua window manager (in other words,anything that has a GUI) need to be run in a special way. Use pythonwinstead of python to start such scripts.
With Python 2.7, you can use either python or pythonw.
4.1.3. Configuration¶
Python on OS X honors all standard Unix environment variables such asPYTHONPATH
, but setting these variables for programs started from theFinder is non-standard as the Finder does not read your .profile
or.cshrc
at startup. You need to create a file~/.MacOSX/environment.plist
. See Apple’s Technical Document QA1067 fordetails.
For more information on installation Python packages in MacPython, see sectionInstalling Additional Python Packages.
4.2. The IDE¶
MacPython ships with the standard IDLE development environment. A goodintroduction to using IDLE can be found athttps://hkn.eecs.berkeley.edu/~dyoo/python/idle_intro/index.html.
4.3. Installing Additional Python Packages¶
There are several methods to install additional Python packages:
Packages can be installed via the standard Python distutils mode (
pythonsetup.pyinstall
).Many packages can also be installed via the setuptools extensionor pip wrapper, see https://pip.pypa.io/.
4.4. GUI Programming on the Mac¶
There are several options for building GUI applications on the Mac with Python.
PyObjC is a Python binding to Apple’s Objective-C/Cocoa framework, which isthe foundation of most modern Mac development. Information on PyObjC isavailable from https://pythonhosted.org/pyobjc/.
The standard Python GUI toolkit is Tkinter
, based on the cross-platformTk toolkit (https://www.tcl.tk). An Aqua-native version of Tk is bundled with OSX by Apple, and the latest version can be downloaded and installed fromhttps://www.activestate.com; it can also be built from source.
wxPython is another popular cross-platform GUI toolkit that runs natively onMac OS X. Packages and documentation are available from http://www.wxpython.org.
PyQt is another popular cross-platform GUI toolkit that runs natively on MacOS X. More information can be found athttps://riverbankcomputing.com/software/pyqt/intro.
4.5. Distributing Python Applications on the Mac¶
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The “Build Applet” tool that is placed in the MacPython 2.7 folder is fine forpackaging small Python scripts on your own machine to run as a standard Macapplication. This tool, however, is not robust enough to distribute Pythonapplications to other users.
The standard tool for deploying standalone Python applications on the Mac ispy2app. More information on installing and using py2app can be foundat http://undefined.org/python/#py2app.
4.6. Other Resources¶
The MacPython mailing list is an excellent support resource for Python users anddevelopers on the Mac:
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Another useful resource is the MacPython wiki:
Download Python
The current production versions are Python 3.4.0 andPython 2.7.6.
Start with one of these versions for learning Python or if you want the moststability; they're both considered stable production releases.
If you don't know which version to use, try Python 3.4. Some existingthird-party software is not yet compatible with Python 3; if you needto use such software, you can download Python 2.7.x instead.
For the MD5 checksums and OpenPGP signatures, look at the detailed Python 3.4.0 page:
- Python 3.4.0 Windows x86 MSI Installer(Windows binary -- does not include source)
- Python 3.4.0 Windows X86-64 MSI Installer (Windows AMD64 / Intel 64 /X86-64 binary [1] -- does not include source)
- Python 3.4.0 Mac OS X 64-bit/32-bit x86-64/i386 Installer (for Mac OS X 10.6 and later[2])
- Python 3.4.0 Mac OS X 32-bit i386/PPC Installer (for Mac OS X 10.5 andlater [2])
- Python 3.4.0 compressed source tarball(for Linux, Unix or Mac OS X)
- Python 3.4.0 xzipped source tarball (for Linux, Unix or Mac OS X, bettercompression)
For the MD5 checksums and OpenPGP signatures, look at the detailed Python 2.7.6 page:
- Python 2.7.6 Windows Installer(Windows binary -- does not include source)
- Python 2.7.6 Windows X86-64 Installer (Windows AMD64 / Intel 64 / X86-64binary [1] -- does not include source)
- Python 2.7.6 Mac OS X 64-bit/32-bit x86-64/i386 Installer (for Mac OS X 10.6 and later [2])
- Python 2.7.6 Mac OS X 32-bit i386/PPC Installer (for Mac OS X 10.3 and later [2])
- Python 2.7.6 compressed source tarball(for Linux, Unix or Mac OS X)
- Python 2.7.6 xzipped source tarball (for Linux, Unix or Mac OS X, bettercompression)
A comprehensive list of the latest release of all major versionsis available if you need source code for an older version of Python.
Alternative Implementations
This site hosts the 'traditional' implementation of Python (nicknamed CPython).A number of alternative implementations are available as well, namely
- IronPython (Python running on .NET)
- Jython (Python running on the Java VirtualMachine)
- PyPy (A fast pythonimplementation with a JIT compiler)
- Stackless Python (Branch of CPython supportingmicrothreads)
Other parties have re-packaged CPython. These re-packagings ofteninclude more libraries or are specialized for a particular application:
- ActiveState ActivePython(commercial and community versions, including scientific computing modules)
- pythonxy(Scientific-oriented Python Distribution based on Qt and Spyder)
- winpython(WinPython is a portable scientific Python distribution for Windows)
- Conceptive Python SDK (targetsbusiness, desktop and database applications)
- Enthought Canopy (acommercial distribution for scientific computing)
- Portable Python (Python and add-on packagesconfigured to run off a portable device)
- PyIMSL Studio(a commercial distribution for numerical analysis – free for non-commercialuse)
- Anaconda Python(a full Python distribution for data management, analysis and visualization oflarge data sets)
- eGenix PyRun (a portablePython runtime, complete with stdlib, frozen into a single executable file)
Information about specific ports, and developer info:
OpenPGP Public Keys
Source and binary executables are signed by the release manager using theirOpenPGP key. The release managers and binary builders since Python 2.3 havebeen:
- Anthony Baxter (key id: 6A45C816)
- Georg Brandl (key id: 36580288)
- Martin v. Löwis (key id: 7D9DC8D2)
- Benjamin Peterson (key id: 18ADD4FF and A4135B38)
- Barry Warsaw (key ids: A74B06BF, EA5BBD71, and ED9D77D5)
- Ronald Oussoren (key id: E6DF025C)
- Ned Deily (key id: 6F5E1540)
- Larry Hastings (key id: F73C700D)
Note: Barry's key id A74B06BF is used to sign the Python 2.6.8 and 2.6.9releases. His key id EA5BBD71 was used to sign all other Python 2.6 and 3.0releases. His key id ED9D77D5 is a v3 key and was used to sign olderreleases.
You can import the release manager public keys by either downloadingthe public key file from here and thenrunning
or by grabbing the individual keys directly from the keyserver networkby running this command:
On the version-specific download pages, you should see a link to both thedownloadable file and a detached signature file. To verify the authenticityof the download, grab both files and then run this command:
Note that you must use the name of the signature file, and you should use theone that's appropriate to the download you're verifying.
- (These instructions are geared toGnuPG and Unix command-line users.Contributions of instructions for other platforms and OpenPGPapplications are welcome.)
Other Useful Items
- Looking for 3rd party Python modules? ThePackage Index has many of them.
- You can view the standard documentationonline, or you can download itin HTML, PostScript, PDF and other formats. See the mainDocumentation page.
- Information on tools for unpacking archive filesprovided on python.org is available.
- Tip: even if you download a ready-made binary for yourplatform, it makes sense to also download the source.This lets you browse the standard library (the subdirectory Lib)and the standard collections of demos (Demo) and tools(Tools) that come with it. There's a lot you can learn from thesource!
- There is also a collection of Emacs packagesthat the Emacsing Pythoneer might find useful. This includes majormodes for editing Python, C, C++, Java, etc., Python debuggerinterfaces and more. Most packages are compatible with Emacs andXEmacs.
Want to contribute? See the Python Developer's Guideto learn about how Python development is managed.
Python is OSI Certified Open Source:
[1] | (1, 2) The binaries for AMD64 will also work on processors that implement theIntel 64 architecture (formerly EM64T), i.e. the architecture that Microsoftcalls x64, and AMD called x86-64 before calling it AMD64. They will not work onIntel Itanium Processors (formerly IA-64). |
Download Python 2.7 On Mac Download
[2] | (1, 2, 3, 4) There is important information about IDLE, Tkinter, and Tcl/Tk on Mac OS Xhere. |
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