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  • Release – Python 3.10.0b1

    Version: None

    Released: May 3, 2021

    This is a beta preview of Python 3.10 Python 3.10 is still in development. 3.10.0b1 is the first of four planned beta release previews. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to prepare their projects to support …

  • Release – Python 3.10.0b2

    Version: None

    Released: May 31, 2021

    This is a beta preview of Python 3.10 Python 3.10 is still in development. 3.10.0b2 is the second of four planned beta release previews. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to prepare their projects to support …

  • Release – Python 3.10.0b4

    Version: None

    Released: July 10, 2021

    This is a beta preview of Python 3.10 Python 3.10 is still in development. 3.10.0b4 is the fourth and last of the beta release previews. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to prepare their projects to …

  • Release – Python 3.10.0rc1

    Version: None

    Released: Aug. 2, 2021

    This is the first release candidate of Python 3.10 This release, 3.10.0rc1, is the penultimate release preview. Entering the release candidate phase, only reviewed code changes which are clear bug fixes are allowed between this release candidate and the final release. The second candidate and the last planned release …

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  • String-SIG - SIG on Enhancement of Python String Processing

    ...pattern matching capabilities with a compatable syntax to Perl. Pipermail archives Archives at reference.com

  • Release – Python 3.10.0b3

    Version: None

    Released: June 17, 2021

    This is a beta preview of Python 3.10 Python 3.10 is still in development. 3.10.0b3 is the third of four planned beta release previews. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to prepare their projects to support …

  • Structured Text Formatting Rules

    ...patterned after the footnote notion in setext but is easier on the eyes. For example, "Pythonland" will be marked as a hyper-references to Python.org. If no matching trailing reference is found then nothing is done.

  • Python Patterns - Implementing Graphs

    Python Patterns - Implementing Graphs Warning This page stays here for historical reasons and it may contain outdated or incorrect information. Change notes: 2/22/98, 3/2/98, 12/4/00: This version of this essay fixes several bugs in the code. 6/10/19: Retraction of find_shortest_path as "nearly optimal". 8/11/19: Fix accidental usage of find_graph() instead of find_path() Copyright (c) 1998, 2000, 2003, 2019 Python Software Foundation. All rights reserved. License...

  • Python Software Foundation: Press Release 20-Dec-2019

    ...patterns, which in code makes it easier to read and reason about. Improvements in concurrency, fault handling, testing, and debugging provide developers with the opportunity to create more robust and secure applications. Going forward, Python 3 will be the only major version of CPython that is actively maintained for bugs and security issues. Users are urged to migrate to a supported version of Python 3 in order to benefit from its many improvements, as well as to avoid potential security vul...

  • Release – Python 3.14.0a1

    Version: None

    Released: Oct. 15, 2024

    This is an early developer preview of Python 3.14 Major new features of the 3.14 series, compared to 3.13 Python 3.14 is still in development. This release, 3.14.0a1 is the first of seven planned alpha releases. Alpha releases are intended to make it easier to test the current state of …

    View Release Notes

  • Python For Beginners

    ...patterns, you can browse the ActiveState Python Cookbook Looking for Something Specific? If you want to know whether a particular application, or a library with particular functionality, is available in Python there are a number of possible sources of information. The Python web site provides a Python Package Index (also known as the Cheese Shop, a reference to the Monty Python script of that name). There is also a search page for a number of sources of Python-related information. Failing that...

  • Job - Software Engineer – Platform & Systems

    Location: San Francisco, CA United States

    Telecommuting: Yes

    CrossTerra is building the infrastructure to power seamless cross-border commerce—fulfillment, localization, payments, and marketplace integrations that work across borders and systems. Our stack spans APIs, Lambdas, multi-tenant frontends, and cloud-native infrastructure. Your job is to help us scale it the right way. We're looking for a senior engineer who can …

  • Unifying types and classes in Python 2.2

    ...pattern as for __getattribute__ applies, where you call the base class __setattr__ to do the actual work. Here's an example: class C(object): def __setattr__(self, name, value): if hasattr(self, name): raise AttributeError, "attributes are write-once" object.__setattr__(self, name, value) C++ programmers may find it useful to realize that this form of subtyping in Python is implemented very similarly to single-inheritance subc...

  • Unifying types and classes in Python 2.2

    ...pattern as for __getattribute__ applies, where you call the base class __setattr__ to do the actual work. Here's an example: class C(object): def __setattr__(self, name, value): if hasattr(self, name): raise AttributeError, "attributes are write-once" object.__setattr__(self, name, value) C++ programmers may find it useful to realize that this form of subtyping in Python is implemented very similarly to single-inheritance subc...

  • Unifying types and classes in Python 2.2

    ...pattern as for __getattribute__ applies, where you call the base class __setattr__ to do the actual work. Here's an example: class C(object): def __setattr__(self, name, value): if hasattr(self, name): raise AttributeError, "attributes are write-once" object.__setattr__(self, name, value) C++ programmers may find it useful to realize that this form of subtyping in Python is implemented very similarly to single-inheritance subc...

  • Unifying types and classes in Python 2.2

    ...pattern as for __getattribute__ applies, where you call the base class __setattr__ to do the actual work. Here's an example: class C(object): def __setattr__(self, name, value): if hasattr(self, name): raise AttributeError, "attributes are write-once" object.__setattr__(self, name, value) C++ programmers may find it useful to realize that this form of subtyping in Python is implemented very similarly to single-inheritance subclassing in C++, with...

  • Metaclasses in Python 1.5

    ...pattern seems to be emerging: almost all these uses of metaclasses (except for Enum, which is probably more cute than useful) mostly work by placing wrappers around method calls. An obvious problem with that is that it's not easy to combine the features of different metaclasses, while this would actually be quite useful: for example, I wouldn't mind getting a trace from the test run of the Synch module, and it would be interesting to add preconditions to it as well. This needs more rese...

  • A Journey to Python

    ...patterns, and development methods, but I think I'll take one more year off bookwriting before I start doing that. In the meantime, I'm also writing, presenting and teaching about "highly technical management of software development", a subject on which many myths exist and on which I have substantial personal experience and reflection to share with others.

  • Debugging Reference Count Problems

    ...pattern of your application becomes very different and this means that you may see very different behavior. So, (maybe from shock), I eliminate the Py_INCREFs and try with just the printing... still works perfectly (save that I'm printing the entire parse tree on every iteration of the while loop (which isn't good...)). Apparently, the INCREFs you added don't change your program's allocation behavior -- so obviously they aren't in the right places. This is confirmed by what yo...

  • What's New In Python 3.0

    ...pattern, search string or replacement string) raises a TypeError. Moreover, the re.UNICODE flag is enabled automatically for unicode patterns, and can be disabled by specifying a new re.ASCII flag; as for bytes patterns, ASCII matching is the only option and trying to specify re.UNICODE for such patterns raises a ValueError. Issue #3300: make urllib.parse.[un]quote() default to UTF-8. Code contributed by Matt Giuca. quote() now encodes the input before quoting, unquote() decodes after unquoting...

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