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  • Slideshow Collections for Instructional Use

    ...Library A slideshow look at the features of the widely used 2-d image manipulation package for Python named 'PIL', providing for the viewing, copying, printing, filtering and transformation of images, including palette manipulation, pixel filtering and multipage animations. (actual video/screencast)

  • Release – Python 3.9.1

    Version: None

    Released: Dec. 7, 2020

    This is the first maintenance release of Python 3.9 Note: The release you're looking at is Python 3.9.1, a bugfix release for the legacy 3.9 series. Python 3.11 is now the latest feature release series of Python 3. Get the latest release of 3.11.x here. We've made …

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  • Release – Python 3.14.3

    Version: None

    Released: Feb. 3, 2026

    This is third maintenance release of Python 3.14 Python 3.14.3 is the third maintenance release of 3.14, containing around 299 bugfixes, build improvements and documentation changes since 3.14.2. Major new features of the 3.14 series, compared to 3.13 Some of the major new features and changes …

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  • Python Success Stories

    Python Success Stories Background Successful information search is mission-critical. It increases worker efficiency and saves money. On an external web site, it also increases customer satisfaction and helps retain users to the web site. The average company can waste millions of dollars because its employees cannot locate and retrieve the information that is needed for their jobs. Infoseek released the original version of Ultraseek Server on March 31, 1997. It was built by wrapping Infoseek's...

  • Python Success Stories

    ...library and great external modules. And when there's no standard library or external module, it's really easy to build wrappers around a third-party library (especially with the ctypes module) Easy and fast code refactoring: we have some old code that gets updated all the time. Cross-platform Development Porting our application to the different supported platforms was really simple thanks to the great portability of both Python and PyQT and most of the external modules we used in the project....

  • Release – Python 3.1.5

    Version: None

    Released: April 9, 2012

    Python 3.1.5 Python 3.1.5 is a security-fix source-only release for Python 3.1.4, fixing several reported security issues: issue 13703 (oCERT-2011-003, hash collision denial of service), issue 14234 (CVE-2012-0876, hash table collisions CPU usage DoS in the expat library), issue 14001 (CVE-2012-0845, SimpleXMLRPCServer denial of service), and …

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  • Release – Python 3.9.0a1

    Version: None

    Released: Nov. 19, 2019

    This is an early developer preview of Python 3.9 Major new features of the 3.9 series, compared to 3.8 Python 3.9 is still in development. This releasee, 3.9.0a1 is the first of six planned alpha releases. Alpha releases are intended to make it easier to test the current …

  • Release – Python 3.9.0a4

    Version: None

    Released: Feb. 26, 2020

    This is an early developer preview of Python 3.9 Python 3.9 is still in development. This release, 3.9.0a4 is the fourth of six planned alpha releases. Alpha releases are intended to make it easier to test the current state of new features and bug fixes and to test the …

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  • Release – Python 3.9.0a5

    Version: None

    Released: March 23, 2020

    This is an early developer preview of Python 3.9 Python 3.9 is still in development. This release, 3.9.0a5 is the fifth of six planned alpha releases. Alpha releases are intended to make it easier to test the current state of new features and bug fixes and to test the …

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  • Release – Python 3.11.0a6

    Version: None

    Released: March 7, 2022

    This is an early developer preview of Python 3.11 Major new features of the 3.11 series, compared to 3.10 Python 3.11 is still in development. This release, 3.11.0a6 is the sixth of seven planned alpha releases. Alpha releases are intended to make it easier to test the …

  • Release – Python 3.11.6

    Version: None

    Released: Oct. 2, 2023

    This is the sixth maintenance release of Python 3.11 Python 3.11.6 is the newest major release of the Python programming language, and it contains many new features and optimizations. Major new features of the 3.11 series, compared to 3.10 Some of the new major new features …

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  • Catalog Requirements

    Catalog Requirements Catalog Requirements There are a few steps needed to find and install a package: Discovery : which module does what I need? Download : where can I get a copy? Security : is this actually from the package author, and not a Trojan horse? Installation : how do I compile the package, install it, and set it up? Updating : what's the latest version of a package? do I need to get an updated version for my system? The ...

  • Python 3.1.5 Release

    ...library), issue 14001 (CVE-2012-0845, SimpleXMLRPCServer denial of service), and issue 13885 (CVE-2011-3389, disabling of the CBC IV attack countermeasure in the _ssl module). Python 3.1.5 was released on April 9, 2012. The last binary release of Python 3.1 was 3.1.4. With the 3.1.5 release, and five years after its first release, the Python 3.1 series is now officially retired. All official maintenance for Python 3.1, including security patches, has ended. For ongoing maintenance releases, ...

  • Release – Python 3.14.1

    Version: None

    Released: Dec. 2, 2025

    This is the first maintenance release of Python 3.14 Python 3.14.1 is the first maintenance release of 3.14, containing around 558 bugfixes, build improvements and documentation changes since 3.14.0. Major new features of the 3.14 series, compared to 3.13 Some of the major new features and …

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  • Quotes about Python

    ...library. New development proceeds rapidly, and maintenance of existing code is straightforward and fast," said Geoff Gerrietts, Software Engineer, HomeGain.com. Thawte Consulting "Python makes us extremely productive, and makes maintaining a large and rapidly evolving codebase relatively simple," said Mark Shuttleworth. University of Maryland "I have the students learn Python in our undergraduate and graduate Semantic Web courses. Why? Because basically there's nothing...

  • Glue It All Together With Python

    ...library that interfaces to the main Internet and web protocols, and has HTML parsing and generation toolkits. Python was a major implementation language for Infoseek when they were smaller. At least one company (Digital Creations) is selling a suite of server side tools using Python. And finally, Python has been used to implement a web browser (Grail). Python is also well represented in the distributed systems world. It is one of the main languages supported by Xerox PARC's ILU (In...

  • Notes

    ...library has changed. To convert from the old library, run the db2pickle.py script using the old version of Python to convert it to a pickle file. After upgrading Python, run the pickle2db.py script using the new version of Python to reconstitute your database. For example: % python2.2 db2pickle.py -h some.db > some.pickle % python2.3 pickle2db.py -h some.db.new < some.pickle Run the scripts without any args to get a usage message. Build The audio driver tests (test_ossaudiodev.py...

  • Release – Python 3.7.0a1

    Version: None

    Released: Sept. 19, 2017

    This is an early developer preview of Python 3.7 Major new features of the 3.7 series, compared to 3.6 Python 3.7 is still in development. This releasee, 3.7.0a1 is the first of four planned alpha releases. Alpha releases are intended to make it easier to test the …

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  • Release – Python 3.11.0a7

    Version: None

    Released: April 5, 2022

    This is an early developer preview of Python 3.11 Major new features of the 3.11 series, compared to 3.10 Python 3.11 is still in development. This release, 3.11.0a7 is the last of seven planned alpha releases. Alpha releases are intended to make it easier to test the …

  • Release – Python 3.9.17

    Version: None

    Released: June 6, 2023

    This is a security release of Python 3.9 Note: The release you're looking at is Python 3.9.17, a security bugfix release for the legacy 3.9 series. Python 3.11 is now the latest feature release series of Python 3. Get the latest release of 3.11.x here. Security content …

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Python language documentation

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