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  • Release – Python 3.7.0b1

    Version: None

    Released: Jan. 31, 2018

    This is a beta preview of Python 3.7 Python 3.7 is still in development. This release, 3.7.0b1, is the first of four planned beta release previews. Among the major new features in Python 3.7 are: PEP 538, Coercing the legacy C locale to a UTF-8 based locale PEP 539 …

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  • Release – Python 3.7.0b2

    Version: None

    Released: Feb. 28, 2018

    This is a beta preview of Python 3.7 Python 3.7 is still in development. This release, 3.7.0b2, is the second of four planned beta release previews. Among the major new features in Python 3.7 are: PEP 538, Coercing the legacy C locale to a UTF-8 based locale PEP 539 …

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  • Bugs in Python 2.4.3

    ...localized strings). For more information, see bug #1284316 IDLE now executes code in a separate process. To communicate between the main process and executing processes, IDLE opens a socket to 127.0.0.1 (the local machine). Some firewalls running on Windows machines interfere with this and can cause either silent failures or erroneous popup windows from the firewall. This problem only occurs if you run a firewall on the same machine as IDLE. The test for the ossaudiodev module hangs on some...

  • Bugs in Python 2.4.4

    ...localized strings). For more information, see bug #1284316 IDLE now executes code in a separate process. To communicate between the main process and executing processes, IDLE opens a socket to 127.0.0.1 (the local machine). Some firewalls running on Windows machines interfere with this and can cause either silent failures or erroneous popup windows from the firewall. This problem only occurs if you run a firewall on the same machine as IDLE. The test for the ossaudiodev module hangs on some...

  • Bugs in Python 2.4.5

    ...localized strings). For more information, see bug #1284316 IDLE now executes code in a separate process. To communicate between the main process and executing processes, IDLE opens a socket to 127.0.0.1 (the local machine). Some firewalls running on Windows machines interfere with this and can cause either silent failures or erroneous popup windows from the firewall. This problem only occurs if you run a firewall on the same machine as IDLE. The test for the ossaudiodev module hangs on some...

  • Bugs in Python 2.4.5

    ...localized strings). For more information, see bug #1284316 IDLE now executes code in a separate process. To communicate between the main process and executing processes, IDLE opens a socket to 127.0.0.1 (the local machine). Some firewalls running on Windows machines interfere with this and can cause either silent failures or erroneous popup windows from the firewall. This problem only occurs if you run a firewall on the same machine as IDLE. The test for the ossaudiodev module hangs on some...

  • Release – Python 3.7.0b5

    Version: None

    Released: May 30, 2018

    This is a beta preview of Python 3.7 Python 3.7 is still in development. This release, 3.7.0b5, is now the final planned beta release preview. Originally, 3.7.0b4 was intended to be the final beta but, due to some unexpected compatibility issues discovered during beta testing of third-party packages, we …

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  • What's new in Python 1.5 and beyond

    ...Locale support in the "re" (Perl regular expressions) module. Use the flag re.L (or re.LOCALE) to enable locale-specific matching rules for w and b. The in-line syntax for this flag is (?L). The built-in function isinstance(x, y) now also succeeds when y is a type object and type(x) is y. repr() and str() of class and instance objects now reflect the package/module in which the class is defined. Module "ni" has been removed. (If you really need it, it's been renamed to &qu...

  • What is Python? Executive Summary

    ...local and global variables, evaluation of arbitrary expressions, setting breakpoints, stepping through the code a line at a time, and so on. The debugger is written in Python itself, testifying to Python's introspective power. On the other hand, often the quickest way to debug a program is to add a few print statements to the source: the fast edit-test-debug cycle makes this simple approach very effective. See also some comparisons between Python and other languages.

  • Legal & Policies

    Legal & Policies Legal Statements Trademark Policy Licenses Contribution Agreements Vendor Info Legal Statements Legal statements on Trademark, Copyright, and Third-Party Content. Trademark Policy PSF trademark usage policy. Licenses About Python licensing. Contribution Agreements Information on contribution licensing and online form for organizations wishing to make software contributions. Vendor Info Accounts payable information and payment options.

  • Job - Python Software Engineer (Docker required)

    Location: Remote Remote

    Mercor is hiring software engineers to assist a leading AI research lab with environment setup and dependency management for open-source Python projects. Your work will focus on configuring development environments, resolving dependency issues, and ensuring tests pass across various codebases. This is a remote, flexible role. More details about the …

  • Release – Python 3.7.2rc1

    Version: None

    Released: Dec. 11, 2018

    Python 3.7.2rc1 is the release candidate preview of the second maintenance release of Python 3.7. The Python 3.7 series is the newest major release of the Python language and contains many new features and optimizations. Among the major new features in Python 3.7 are: PEP 539, new C API …

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  • Release – Python 3.7.3rc1

    Version: None

    Released: March 12, 2019

    Python 3.7.3rc1 is the release candidate preview of the third maintenance release of Python 3.7. The Python 3.7 series is the newest major release of the Python language and contains many new features and optimizations. Among the major new features in Python 3.7 are: PEP 539, new C API …

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  • Volunteer

    ...local users group Help with other initiatives, such as grants Participate in planning and organizing PyCon US Python Software Foundation Working Groups We also have PSF working groups comprised of volunteers. See the list of active working groups here. Please note that not all working groups are currently accepting new volunteers. Volunteer for PyCon US You can also volunteer for PyCon US.

  • Grant Types

    ...local folks that have a common interest. For us specifically, that means the content is always related to Python. These events could be small or large and can happen monthly, quarterly, or even bi-weekly. Python projects Python projects are development projects that either create new libraries, improve current ones, or even port libraries to Python 3. Here are some examples of past projects the PSF has funded: Conferences A conference can be a one or more day event that has multiple speakers...

  • Python Patterns - An Optimization Anecdote

    ...local variable lookups are much faster than global or built-in variable lookups: the Python "compiler" optimizes most function bodies so that for local variables, no dictionary lookup is necessary, but a simple array indexing operation is sufficient. The relative speed of f4() compared to f1() and f3() suggests that both reasons why f3() is faster contribute, but that the first reason (fewer lookups) is a bit more important. (To get more precise data on this, we would have to ins...

  • PSF Sponsorship Prospectus

    ...} USD", dataPoints: [ { label: '12/16', y: 164476 }, { label: '12/17', y: 136709 }, { label: '12/18', y: 185204 }, { label: '12/19', y: 248343 }, { label: '09/20', y: 263847 } ] },{ type: "line", name: "Other", showInLegend: true, toolTipContent: "${y} USD", dataPoints: [ { label: '12/16', y: 185.52 }, { label: '12/17', y: 161.85 }, { label: '12/18', y: 180.69 }, { label: '12/19', y: 118.72 }, { label: '09/20', y: 6394.44 } ] } ] }); revenueTrendsChart.render(); ...

  • Release – Python 3.7.0

    Version: None

    Released: June 27, 2018

    Note: The release you are looking at is Python 3.7.0, the initial feature release for the legacy 3.7 series which has now reached end-of-life and is no longer supported. See the downloads page for currently supported versions of Python. The final source-only security fix release for 3.7 was 3.7.17 …

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  • Release – Python 3.7.1rc1

    Version: None

    Released: Sept. 26, 2018

    Python 3.7.1rc1 is a release candidate preview of the first maintenance release of Python 3.7. The Python 3.7 series is the newest major release of the Python language and contains many new features and optimizations. Among the major new features in Python 3.7 are: PEP 539, new C API …

    View Release Notes

  • Release – Python 3.7.1rc2

    Version: None

    Released: Oct. 13, 2018

    Python 3.7.1rc2 is the second release candidate preview of the first maintenance release of Python 3.7. The Python 3.7 series is the newest major release of the Python language and contains many new features and optimizations. Among the major new features in Python 3.7 are: PEP 539, new C …

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Python language documentation

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