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  • IDLE and tkinter with Tcl/Tk on macOS

    IDLE and tkinter with Tcl/Tk on macOS Important If you are using macOS 12 Monterey or later, you may see problems with file open and save dialogs when using IDLE or other tkinter-based applications. The most recent versions of python.org installers (for 3.10.0 and 3.9.8) have patched versions of Tk to avoid these problems. They should be fixed in an upcoming Tk 8.6.12 release. If you are using a Python from any current python.org Python installer for macOS (3.10.0+ or 3.9.0+), no further acti...

  • Release – Python 3.7.0rc1

    Version: None

    Released: June 11, 2018

    This is the release candidate of Python 3.7.0 This release, 3.7.0rc1, is the final planned release preview. Assuming no critical problems are found prior to 2018-06-27, the scheduled release date for 3.7.0, no code changes are planned between this release candidate and the final release. Among …

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  • Release – Python 3.7.8rc1

    Version: None

    Released: June 17, 2020

    Note Note: The release you are looking at is a bugfix release preview 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 3.6.8rc1

    Version: None

    Released: Dec. 11, 2018

    Python 3.6.8rc1 is a release candidate preview of the eighth and last maintenance release of Python 3.6. The Python 3.6 series contains many new features and optimizations. Note Python 3.7 is now released and is the latest feature release of Python 3. Get the latest release of …

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  • Release – Python 3.6.8

    Version: None

    Released: Dec. 24, 2018

    Note: The release you are looking at is Python 3.6.8, the final bugfix release for the legacy 3.6 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 3.6 was 3.6.15 …

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  • 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, …

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  • 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, …

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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, …

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  • 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, …

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  • 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 …

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  • Release – Python 3.7.1

    Version: None

    Released: Oct. 20, 2018

    Note: The release you are looking at is a bugfix 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. Among the …

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  • Release – Python 3.7.3

    Version: None

    Released: March 25, 2019

    Note: The release you are looking at is a bugfix 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. Among the …

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  • Release – Python 3.7.2

    Version: None

    Released: Dec. 24, 2018

    Note: The release you are looking at is a bugfix 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. Among the …

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  • Release – Python 3.6.5rc1

    Version: None

    Released: March 13, 2018

    Python 3.6.5rc1 is a release candidate preview of the fifth maintenance release of Python 3.6. The Python 3.6 series contains many new features and optimizations. Among the new major new features in Python 3.6 are: PEP 468, Preserving Keyword Argument Order PEP 487, Simpler …

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  • Release – Python 3.6.6rc1

    Version: None

    Released: June 12, 2018

    Python 3.6.6rc1 is a release candidate preview of the sixth maintenance release of Python 3.6. The Python 3.6 series contains many new features and optimizations. Among the new major new features in Python 3.6 are: PEP 468, Preserving Keyword Argument Order PEP 487, Simpler …

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  • Release – Python 3.6.7rc1

    Version: None

    Released: Sept. 26, 2018

    Python 3.6.7rc1 is a release candidate preview of the seventh maintenance release of Python 3.6. The Python 3.6 series contains many new features and optimizations. Among the new major new features in Python 3.6 are: PEP 468, Preserving Keyword Argument Order PEP 487, Simpler …

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  • Release – Python 3.6.7rc2

    Version: None

    Released: Oct. 13, 2018

    Python 3.6.7rc2 is the second release candidate preview of the seventh maintenance release of Python 3.6. The Python 3.6 series contains many new features and optimizations. Among the new major new features in Python 3.6 are: PEP 468, Preserving Keyword Argument Order PEP 487, …

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  • Python Patterns - An Optimization Anecdote

    Python Patterns - An Optimization Anecdote Warning This page stays here for historical reasons and it may contain outdated or incorrect information. The other day, a friend asked me a seemingly simple question: what's the best way to convert a list of integers into a string, presuming that the integers are ASCII values. For instance, the list [97, 98, 99] should be converted to the string 'abc'. Let's assume we want to write a function to do this. The first version I came ...

  • Release – Python 3.7.4rc1

    Version: None

    Released: June 18, 2019

    Python 3.7.4rc1 is the release candidate preview of the fourth 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. Note that 3.7.4rc1 is a release preview and thus its use is not recommended …

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