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  • Python Patterns - An Optimization Anecdote

    ...function names (global or built-in) are also global constants! Try to use map(), filter() or reduce() to replace an explicit for loop, but only if you can use a built-in function: map with a built-in function beats for loop, but a for loop with in-line code beats map with a lambda function! Check your algorithms for quadratic behavior. But notice that a more complex algorithm only pays off for large N - for small N, the complexity doesn't pay off. In our case, 256 turned out to be ...

  • 2018 PSF Annual Report

    ...function(d) { return scaleX(d.x); }) .attr("y", function(d) { return scaleY(d.y) + chartOptions.margin; }) .attr("height", function(d) { return yAxisLength - scaleY(d.y); }) .attr("width", function(d){ return barWidth; }) svg.append("g").selectAll("text") .data(initData) .enter() .append("text") .attr("class", "bar-label") .attr("x", function(d) { return scaleX(d.x) + 20 }) .attr("y", function(d) { return scaleY(d.y) + 35 }...

  • 2019 PSF Annual Report

    ...map-holder { padding-top: 20px; } @media (min-width: 768px) { .section-chart .map-holder { padding-top: 30px; } } .section-map .h2 { margin-bottom: 0; line-height: 1.2; } @media (max-width: 479px) { .section-map .h2 { font-size: 16px; } } @media (min-width: 480px) and (max-width: 768px) { .section-map .h2 { font-size: 18px; } } @media (min-width: 768px) and (max-width: 1024px) { .section-map .h2 { font-size: 20px; } } .ma...

  • 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 current state of …

  • Release – Python 3.13.1

    Version: None

    Released: Dec. 3, 2024

    This is the first maintenance release of Python 3.13 Python 3.13 is the newest major release of the Python programming language, and it contains many new features and optimizations compared to Python 3.12. 3.13.1 is the latest maintenance release, containing almost 400 bugfixes, build improvements and documentation changes since 3.13.0. …

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  • Release – Python 3.3.6rc1

    Version: None

    Released: Oct. 4, 2014

    This is a security-fix source-only release. The last binary release was 3.3.5. The list of fixed security related issues can be found in the NEWS file. Major new features of the 3.3 series, compared to 3.2 Python 3.3 includes a range of improvements of the 3.x series, as …

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  • Release – Python 3.3.6

    Version: None

    Released: Oct. 12, 2014

    Python 3.3.x has reached end-of-life. Python 3.3.7, the final security-fix release, is available here. This is a security-fix source-only release. The list of fixed security related issues can be found in the NEWS file. Major new features of the 3.3 series, compared to 3.2 Python 3.3 includes a …

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  • Python Success Stories

    ...mapping from property name to prediction function. If a requested property name (the dictionary key) is in the cache, we reuse it. Otherwise, we find the associated function, call it to compute the value, store the result in the cache, and return it. The functions themselves are given a reference to the Properties manager so they can recursively request any additionally needed dependencies. To add a new prediction we register the new function in the function table -- and let the functions themse...

  • Release – Python 3.3.5rc1

    Version: None

    Released: Feb. 23, 2014

    Python 3.3.5 includes fixes for these important issues: a 3.3.4 regression in zipimport (see http://bugs.python.org/issue20621) a 3.3.4 regression executing scripts with a coding declared and Windows newlines (see http://bugs.python.org/issue20731) potential DOS using compression codecs in bytes.decode() (see http://bugs.python.org/issue19619 and http://bugs.python.org/issue20404) and also fixes quite a few other …

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  • Release – Python 3.3.5rc2

    Version: None

    Released: March 2, 2014

    Python 3.3.5 includes fixes for these important issues: a 3.3.4 regression in zipimport (see http://bugs.python.org/issue20621) a 3.3.4 regression executing scripts with a coding declared and Windows newlines (see http://bugs.python.org/issue20731) potential DOS using compression codecs in bytes.decode() (see http://bugs.python.org/issue19619 and http://bugs.python.org/issue20404) and also fixes quite a few other …

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  • Release – Python 3.3.5

    Version: None

    Released: March 9, 2014

    Python 3.3.5 includes fixes for these important issues: a 3.3.4 regression in zipimport (see http://bugs.python.org/issue20621) a 3.3.4 regression executing scripts with a coding declared and Windows newlines (see http://bugs.python.org/issue20731) potential DOS using compression codecs in bytes.decode() (see http://bugs.python.org/issue19619 and http://bugs.python.org/issue20404) and also fixes quite a few other …

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  • Release – Python 3.3.5rc1

    Version: None

    Released: Feb. 23, 2014

    Python 3.3.5 includes fixes for these important issues: a 3.3.4 regression in zipimport (see http://bugs.python.org/issue20621) a 3.3.4 regression executing scripts with a coding declared and Windows newlines (see http://bugs.python.org/issue20731) potential DOS using compression codecs in bytes.decode() (see http://bugs.python.org/issue19619 and http://bugs.python.org/issue20404) and also fixes quite a few other …

  • Release – Python 3.3.7rc1

    Version: None

    Released: Sept. 6, 2017

    This is a security-fix source-only release. The last binary release was 3.3.5. This is the release candidate of Python 3.3.7. Python 3.3.0 was released on 2012-09-29 and has been in security-fix-only mode since 2014-03-08. Per Python Development policy, all support for the 3.3 series of releases ends on 2017-09-29 …

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  • Release – Python 3.3.7

    Version: None

    Released: Sept. 19, 2017

    Python 3.3.x has reached end-of-life. This is its final release. It is a security-fix source-only release. Python 3.3.0 was released on 2012-09-29 and has been in security-fix-only mode since 2014-03-08. Per Python Development policy, all support for the 3.3 series of releases ended on 2017-09-29, five years after the …

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  • Python 3.3.5 release

    ...function-signature object The new "faulthandler" module that helps diagnosing crashes The new "unittest.mock" module The new "ipaddress" module The "sys.implementation" attribute A policy framework for the email package, with a provisional (see PEP 411) policy that adds much improved unicode support for email header parsing A "collections.ChainMap" class for linking mappings to a single unit Wrappers for many more POSIX functions in the "os&...

  • Highlights: Python 2.4

    ...maplib now supports the IMAP THREAD command heapq has two new functions nlargest() and nsmallest() to find the N largest or smallest values in a dataset. itertools has a new function groupby() that acts a little like an SQL "GROUP BY" statement. It also gained a function tee() that returns N independent iterators that replicate the iterator passed as an argument. A new function basicConfig() was added to the logging package to simplify setup for logging. There is also a new TimedRotati...

  • Python Success Stories

    ...maps, showing forecast accuracy by geographical area, are then generated for use on the web site and in printed reports. This forecast accuracy map uses intensity of blue and red to indicate the degree of error in predicting temperatures by geographical area ForecastWatch.com's web interface was originally written in PHP but later changed to Python to simplify the toolset and improve integration with the other components of the system. Quixote, a Python web application framework, was selected...

  • Python Success Stories

    ...functionality exposed by the server. It requires a live connection to the server in order to function. A JavaScript 'tracking code' is installed on client web pages and provides the server with active web analytics. Some of the other technologies we're using at the moment for WordStream are Adobe Flex, Linux, Apache, and C/C++. As for development process tools, we're using PyDev Extensions, Trac, Buildbot, Review Board, and Git. The Decision to Use Python Python was used from the start of th...

  • Python Success Stories

    ...Mapping Scientific Programming Simulation Weather Engineering Energy Efficiency GIS and Mapping Lighting Marine Simulation Software Development Accessibility Python in The Blind Audio Tactile Mapping System Python and Zope in the EZRO Content Management System Assistive Technologies Python in The Blind Audio Tactile mapping System A Custom Image Viewing Game for an Autistic Child Code Generation Cog: A Code Generation Tool Written in Python Computer Graphics Industrial Light...

  • Python Patterns - Implementing Graphs

    ...functions are about as simple as they get. Yet, they are nearly optimal (for code written in Python). In another Python Patterns column, I will try to analyze their running speed and improve their performance, at the cost of more code. UPDATE: Eryk Kopczyński pointed out that these functions are not optimal. To the contrary, "this program runs in exponential time, while find_shortest_path can be done in linear time using BFS [Breadth First Search]. Furthermore a linear BFS is simpler...

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