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  • Python Software Foundation: Press Release 13-Feb-2003

    Python Software Foundation: Press Release 13-Feb-2003 Creators of Python Sponsor PyCon 2003, First Annual Developers Conference in March FREDERICKSBURG, VA, February 13, 2003 No, it's not a snake or the name of a British comedy group. Python is one of the most useful, compelling and intelligently designed programming platforms to have emerged into the computer industry mainstream in recent years. It is rapidly gaining wide acceptance and being deployed in major IT shops around the wor...

  • Python Software Foundation: Press Release 9-Feb-2004

    Python Software Foundation: Press Release 9-Feb-2004 February 9, 2004 Press Release SOURCE: Python Software Foundation PyCon 2004 - Second Annual Python Developers Conference Keynote Speech by Mitchell Kapor, founder of Lotus FREDERICKSBURG, Va., February 9, 2004 -- PyCon 2004, the second annual Python developers conference, will be held at George Washington University's Cafritz Conference Center in Washington DC on March 24-26, 2004. Mitchell Kapor, founder of Lotus Development Co...

  • Python Software Foundation: Python Conference Committee Report (December 2003)

    Python Software Foundation: Python Conference Committee Report (December 2003) <center> <h3>The Python Software Foundation <br>Python Conference Committee Report </h3> </center> <p>December 2003 <p>David Ascher reports that he and Steve Holden had a phone call, and Ascher, Holden, Jeremy Hylton, Neal Norwitz, and Itamar Shtull-Trauring met on IRC. <h3>Deadlines</h3> <ul> System Message: ERROR/3 (<string>, line 15) Unexpected in...

  • Unifying types and classes in Python 2.2

    ...== (A, object) B.__mro__ == (B, A, object) C.__mro__ == (C, A, object) D.__mro__ == (D, B, C, A, object) The expression super(C, self).m should only be used inside the implementation of method m in class C. Bear in mind that while self is an instance of C, self.__class__ may not be C: it may be a class derived from C (for example, D). The expression super(C, self).m, then, searches self.__class__.__mro__ (the MRO of the class that was used to create the instance in sel...

  • Unifying types and classes in Python 2.2

    ...== (A, object) B.__mro__ == (B, A, object) C.__mro__ == (C, A, object) D.__mro__ == (D, B, C, A, object) The expression super(C, self).m should only be used inside the implementation of method m in class C. Bear in mind that while self is an instance of C, self.__class__ may not be C: it may be a class derived from C (for example, D). The expression super(C, self).m, then, searches self.__class__.__mro__ (the MRO of the class that was used to create the instance in sel...

  • Unifying types and classes in Python 2.2

    ...== (A, object) B.__mro__ == (B, A, object) C.__mro__ == (C, A, object) D.__mro__ == (D, B, C, A, object) The expression super(C, self).m should only be used inside the implementation of method m in class C. Bear in mind that while self is an instance of C, self.__class__ may not be C: it may be a class derived from C (for example, D). The expression super(C, self).m, then, searches self.__class__.__mro__ (the MRO of the class that was used to create the instance in sel...

  • Unifying types and classes in Python 2.2

    ...== (A, object) B.__mro__ == (B, A, object) C.__mro__ == (C, A, object) D.__mro__ == (D, B, C, A, object) The expression super(C, self).m should only be used inside the implementation of method m in class C. Bear in mind that while self is an instance of C, self.__class__ may not be C: it may be a class derived from C (for example, D). The expression super(C, self).m, then, searches self.__class__.__mro__ (the MRO of the class that was used to create the instance in self) for the o...

  • PSF Officers & Board Members

    PSF Officers & Board Members Officers & Directors by Year 2025-2026 2024-2025 2023-2024 2022-2023 2021-2022 2020-2021 Earlier Officers & Directors by Name Officers By Title Officers & Directors by Year See also Duties & Responsibilities of Directors 2025-2026 Officers President/Chair: Jannis Leidel Vice Chair Elect: Cristián Maureira-Fredes Vice Chairs: Christopher Neugebauer and Georgi Ker Executive Director: Deb Nicholson Secretary: Deb Nicholson Assistant Secre...

  • Release – Python 2.3.2

    Version: None

    Released: Oct. 3, 2003

    This is a patch release which supersedes earlier releases of 2.3. Important: This release is vulnerable to the problem described in security advisory PSF-2006-001 "Buffer overrun in repr() of unicode strings in wide unicode builds (UCS-4)". This fix is included in Python 2.4.4 and Python 2.5 …

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  • Release – Python 2.4.5

    Version: None

    Released: March 11, 2008

    Python 2.4 is now in security-fix-only mode. No new features are being added, and bugs are not fixed anymore unless they affect the stability and security of the interpreter, or of Python applications. This release includes just a small number of fixes, primarily preventing crashes of the interpreter in …

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  • Release – Python 2.3.4

    Version: None

    Released: May 27, 2004

    This is a patch release which supersedes earlier releases of 2.3. Important: This release is vulnerable to the problem described in security advisory PSF-2006-001 "Buffer overrun in repr() of unicode strings in wide unicode builds (UCS-4)". This fix is included in Python 2.4.4 and Python 2.5 …

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  • Release – Python 2.3.3

    Version: None

    Released: Dec. 19, 2003

    This is a patch release which supersedes earlier releases of 2.3. Important: This release is vulnerable to the problem described in security advisory PSF-2006-001 "Buffer overrun in repr() of unicode strings in wide unicode builds (UCS-4)". This fix is included in Python 2.4.4 and Python 2.5 …

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  • Release – Python 3.5.9

    Version: None

    Released: Nov. 2, 2019

    Python 3.5.9 Python 3.5 has reached end-of-life. Python 3.5.10, the final release of the 3.5 series, is available here. Python 3.5.9 was released on November 1st, 2019. There were no new changes in version 3.5.9; 3.5.9 was released only because of a CDN caching problem, …

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  • Release – Python 3.9.20

    Version: None

    Released: Sept. 6, 2024

    This is a security release of Python 3.9 Note: The release you're looking at is Python 3.9.20, a security bugfix release for the legacy 3.9 series. Python 3.12 is now the latest feature release series of Python 3. Get the latest release of 3.12.x here. Security content …

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  • Release – Python 3.8.20

    Version: None

    Released: Sept. 6, 2024

    This is a security release of Python 3.8 Note: The release you're looking at is Python 3.8.20, a security bugfix release for the legacy 3.8 series. Python 3.12 is now the latest feature release series of Python 3. Get the latest release of 3.12.x here. Security content …

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  • Release – Python 3.10.15

    Version: None

    Released: Sept. 7, 2024

    This is a security release of Python 3.10 Note: The release you're looking at is Python 3.10.15, a security bugfix release for the legacy 3.10 series. Python 3.12 is now the latest feature release series of Python 3. Get the latest release of 3.12.x here. Security content …

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  • Release – Python 3.11.10

    Version: None

    Released: Sept. 7, 2024

    This is a security release of Python 3.11 Note: The release you're looking at is Python 3.11.10, a security bugfix release for the legacy 3.11 series. Python 3.12 is now the latest feature release series of Python 3. Get the latest release of 3.12.x here. Security content …

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  • Release – Python 3.13.5

    Version: None

    Released: June 11, 2025

    This is the fifth 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. 3.13.5 is the fifth maintenance release of 3.13. 3.13.5 is an expedited release to fix …

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  • Release – Python 3.13.7

    Version: None

    Released: Aug. 14, 2025

    This is the seventh 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. 3.13.7 is the seventh maintenance release of 3.13. 3.13.7 is an expedited release to fix …

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  • Release – Python 3.13.9

    Version: None

    Released: Oct. 14, 2025

    This is the ninth maintenance release of Python 3.13 Note: This is Python 3.13.9, a maintenance release for Python 3.13. Python 3.14 is now the latest feature release series of Python 3. Get the latest release of 3.14.x here. 3.13.9 is an expedited release containing a fix …

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