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...iate this with design decisions aimed at decoupling the system's components. Python's dynamic nature and supreme flexibility made it easier to write generic interfaces, which later facilitated the rewriting and refactoring tasks we had to undertake. Conclusion Since switching to Python, we are writing better structured and more readable code in less time ... and it's fun! I can't think of a better testament to a programming tool. About the Author Hamish Lawson is a software developer in the ...
...ith Marc-André writing to Tarek Ziadé <tarek at ziade.org> to state problem with specific design (which was really attractive, but dilutive). July 2012. Martin <martin.brochhaus at gmail.com> inquired about use of a derived logo by the Singapore Python User Group. Their use was infringing, and Martin was gracious about changing to a non-infringing (unrelated) design after receiving clarification. August 2012. Peter Funk <pf at artcom-gmbh.de> inquired about guidelines for deri...
...in handy. __new__ is the first step in instance construction, invoked before __init__. The __new__ method is called with the class as its first argument; its responsibility is to return a new instance of that class. Compare this to __init__: __init__ is called with an instance as its first argument, and it doesn't return anything; its responsibility is to initialize the instance. There are situations where a new instance is created without calling __init__ (for example when the instan...
...icense. But this situation shows why we hate doing that: you've taken over their language. If we now agree that this is GPL-compatible, we'll have to live with it forever, because other people will copy it from your license. And it still contains more risks for the future than we think it is wise to incur. So let's take paragraph 7 and reduce it to the no-joint-venture clause, which we also think is unnecessary, but which is harmless. It would then read: 7. Nothing in this ...
...is called. To further initialize the subclass instance, subclasses should override 'init' instead of __init__ - the __init__ method is called each time the constructor is called. For example: >>> class MySingleton(Singleton): ... def init(self): ... print "calling init" ... def __init__(self): ... print "calling __init__" ... >>> x = MySingleton() calling init calling __init__ >>> assert x.__class__ is MySingleton >>> y = MySingleton() calling __init_...
...istributing Python modules. Related requirement: the Distutils sdist and bdist_* commands should have a --sign switch to sign the generated .tgz, .rpm, or whatever file. Requirements from #4 None Requirements from #5 Not covered by this page. This includes checking for updated versions, tracking dependencies between Python packages, and between Python packages and system libraries. These seem to be difficult problems that require a database of Python packages installed ...
...including the construction of web applications, complex integrated business solutions, and large desktop applications. Python is often characterized as an agile language that promotes speedy development and includes a unit-testing framework for building more robust applications. Key features of Python include: Object orientation, modular name spaces, exceptions, and multi-threading High-level dynamic data typing and very late binding Tight integration with C, C++, and Java modules ...
...in October. For PyCon Ireland 2013, we had ordered a smaller roll-up version which will stay in Ireland to reduce the shipping costs overhead. PSF Marketing Work Group Going forward, I'd like to setup a new PSF working group for managing and coordinating PSF marketing activities. This will hopefully happen in the next few months, available time permitting. If anyone is interested in joining such a working group, please let me know. Python Events Calendar I'm continuing discussions with nationa...
...ion 2024 Annual Impact Report In 2024, the Python community and language continued to grow! The PSF celebrated a year of remarkable growth, with Python becoming the most popular language on GitHub and worldwide community engagement at an all-time high. We expanded our impact by welcoming our inaugural PyPI Support Specialist, Maria Ashna, the revival of the User Success and Education and Outreach Workgroups, and continued investment in grants, infrastructure, and accessibility. We’d l...
...Python community by coordinating, organizing, teaching, writing, and evangelizing, the following statement should be true: "[Nominated Person] has served the Python community through extraordinary efforts in organizing Python events, publicly promoting Python, and teaching and coordinating others. [Nominated Person]'s efforts have shown leadership and resulted in long-lasting and substantial gains in the number and quality of Python users, and have been widely recognized as being above and ...
...in 2022 and has already written a lot about Python and security on his blog. This critical role would not be possible without funding from the OpenSSF Alpha-Omega Project. PyPI Safety & Security Engineer - Mike Fiedler joined the PSF earlier this year as our first ever PyPI Safety & Security Engineer. Mike is already a dedicated member of the Python packaging community–he has been a Python user for some 15 years, maintains and contributes to open source projects, and became a PyPI Maintainer i...
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Released: Oct. 5, 2020
This is the stable release of Python 3.9.0 Note: The release you're looking at is Python 3.9.0, a legacy release. Python 3.11 is now the latest feature release series of Python 3. Get the latest release of 3.11.x here. Installer news This is the first version of Python to …
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...itten in Python, suitable for teaching Python to computer users without previous programming experience. Design and implement a prototype library of Python modules connecting Python to an existing 3D game-playing engine for the purpose of teaching Python in an engaging environment. Write a tutorial that teaches general programming skills and good programming habits to students with no previous programming skills, using the above software. Create and maintain a website and mailing l...
Released: June 28, 2021
This is the sixth maintenance release of Python 3.9 Note: The release you're looking at is Python 3.9.6, 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. There's been 146 commits …
...id goodbye to our first Executive Director and welcomed four new team members in new roles. We celebrated our 20th anniversary and built on the successes of our first two decades to launch new areas of work that advance our mission and help us to even better serve our Python community. We’d love for you to take a look at the 2021 Annual Report that we put together to share some highlights from the year, financial reporting, and some previews of what’s to come in the next year. Download and r...
...ions have no direction and are called edges. We mainly discuss directed graphs. Algorithms in graphs include finding a path between two nodes, finding the shortest path between two nodes, determining cycles in the graph (a cycle is a non-empty path from a node to itself), finding a path that reaches all nodes (the famous "traveling salesman problem"), and so on. Sometimes the nodes or arcs of a graph have weights or costs associated with them, and we are interested in finding the cheap...
...inearization of C is simply the list [C, C1 , C2]. However, with multiple inheritance hierarchies, the construction of the linearization is more cumbersome, since it is more difficult to construct a linearization that respects local precedence ordering and monotonicity. I will discuss the local precedence ordering later, but I can give the definition of monotonicity here. A MRO is monotonic when the following is true: if C1 precedes C2 in the linearization of C, then C1 precedes C2 in the lin...
...ing MMTK in 1996. I had some experience with mainstream simulation packages for biomolecules that were written in Fortran and had their origins in the 1970s. Those packages were too cumbersome to use and in particular to modify and extend. Since my research work is focused on the development of new simulation techniques, modifiability was a particularly important criterion. Dynamic deformation of the chaperon protein GroEL, obtained with the MMTK-based interactive DomainFinder (Zoom in) Chara...
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