If you're using Mac OS (OpenSesame 3.3.5 build 1) and experience an error related to freetype, download the latest Mac OS package (3.3.5 build 2).
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Overview
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- Tips
This short guide is written to show you how to properly install Python 3 on a Mac OS X computer. Before you jump into the guide, do take note that there are multiple ways to install Python 3 on a Mac but with this guide, I’ll show you the two easiest ways to do this, step-by-step. Python 3.3.4 Mac OS X 32-bit i386/PPC Installer for 32-bit versions on the Power PC processor The Python disk image begins downloading. Be patient: The disk image requires several minutes to download. Most browsers provide a method for monitoring the download process so that you can easily see how long the download will take. QBittorrent is a cross-platform free and open-source BitTorrent client. QBittorrent is a native application written in C. It uses Boost, Qt 5 toolkit, and libtorrent-rasterbar library (for the torrent back-end). Its optional search engine is written in Python. Downloads Mac OS X; Python Releases for Mac OS X. Latest Python 3 Release - Python 3.9.0; Latest Python 2 Release - Python 2.7.18; Stable Releases. Note: As of January 1, 2020, Python 2.7 is no longer maintained. Python 2 Windows installer (.exe) Python 2 Windows no installation required (.zip) Mac OS. This article on the Mac OS support site explains how to override the security settings of Mac OS that will by default prevent OpenSesame from launching. Python 3 Mac OS package (.dmg) Ubuntu.
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The latest stable version is 3.3.5 Lentiform Loewenfeld, released on Oct 9, 2020 (release notes).
![Python Python](https://www.macworld.co.uk/cmsdata/features/3635912/how_to_use_python_on_mac_basicif_1600.jpg)
Windows
The standard download is based on Python 3.7 for 64 bit systems. The installer and
.zip
packages are identical, except for the installation.The Megapack is identical to the standard Python 3.7 download above, except that it comes with a large number of libraries for scientific computing pre-installed.
Some Python packages are not compatible with Python 3. If you want to use those, please download the Python 2.7 (64 bit) package below. Note: As of January 1, 2020, Python 2.7 is no longer maintained.
Mac OS
This article on the Mac OS support site explains how to override the security settings of Mac OS that will by default prevent OpenSesame from launching.
Ubuntu
OpenSesame 3.3 is available through the Cogscinl PPA. To add this repository to your software sources and install OpenSesame, run the following commands in a terminal:
Some commonly used packages are not available through the PPA. You can install them through
pip
:Anaconda (cross-platform)
First, create a new Python environment for OpenSesame (optional):
Next, add the relevant channels (
cogsci
) and (conda-forge
) and install all relevant packages:Some packages are not available through conda. You can use
pip install
for these.Once you have installed all packages, you can simply run OpenSesame by (after having activated the correct environment) running:
Or for the Rapunzel code editor:
Older versions
Older versions can be downloaded from GitHub releases:
Source code
The source code of OpenSesame is available on GitHub.
Tips
Which version of Python to use?
OpenSesame is currently built with Python 3.7.6 (standard package) and Python 2.7.15.
When (not) to update?
- Update while developing and testing your experiment; it is always best to use the latest version of OpenSesame.
- Do not update while running an experiment; that is, do not update while you are collecting data.
- Run an experiment with the same version of OpenSesame that you used for developing and testing.
Manually upgrading packages
- OpenSesame is a regular Python environment, and you can upgrade packages with
pip
orconda
as described here:
Tips for system administrators
- When a new major version of OpenSesame is released (with a version ending in 0, e.g. 3.1.0), it is generally followed quickly by one or two maintenance releases (e.g. 3.1.1 and 3.1.2) that address major bugs. Therefore, if you are installing OpenSesame on systems that you do not update often, it is best to wait until the second or third maintenance release (e.g. 3.0.2, 3.1.3, etc.). That way you minimize the risk of rolling out a version of OpenSesame that contains major bugs.
- The Windows installer allows you to silently install OpenSesame using the
/S
flag.
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.
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 3 from the Pythonwebsite (https://www.python.org). A current “universal binary” build of Python,which runs natively on the Mac’s new Intel and legacy PPC CPU’s, is availablethere.
What you get after installing is a number of things:
- A
Python3.9
folder in yourApplications
folder. In hereyou find IDLE, the development environment that is a standard part of officialPython distributions; and PythonLauncher, which handles double-clicking Pythonscripts from the Finder. - 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-dev.github.io/macvim/) and Aquamacs(http://aquamacs.org/).
To run your script from the Terminal window you must make sure that
/usr/local/bin
is in your shell search path.![Python mac os download Python mac os download](/uploads/1/2/9/2/129247273/619294710.png)
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 3.9, you can use either python or pythonw.
4.1.3. Configuration¶
Python Mac Os Download 10 13
Python on OS X honors all standard Unix environment variables such as
PYTHONPATH
, 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 athttp://www.hashcollision.org/hkn/python/idle_intro/index.html.
4.3. Installing Additional Python Packages¶
There are several methods to install additional Python packages:
Python For Mac Os
- 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://pypi.org/project/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 https://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¶
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¶
Python Idle Download
The MacPython mailing list is an excellent support resource for Python users anddevelopers on the Mac:
Python Mac Os Download Windows 10
Another useful resource is the MacPython wiki: