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  • Sigstore Information

    Sigstore Information Information on CPython release artifacts signing and verification with Sigstore Starting with the Python 3.11.0, Python 3.10.7, Python 3.9.14, Python 3.8.14, and Python 3.7.14 releases, CPython release artifacts are additionally signed with Sigstore. Starting with Python 3.14, Sigstore is the only method of signing and verification of release artifacts. Releases of Python older than the 3.14 series also include legacy OpenPGP signatures that can be verified using public key...

  • Sigstore Information

    Sigstore Information Information on CPython release artifacts signing and verification with Sigstore Starting with the Python 3.11.0, Python 3.10.7, Python 3.9.14, Python 3.8.14, and Python 3.7.14 releases, CPython release artifacts are additionally signed with Sigstore (in addition to existing GPG signatures). Starting with Python 3.14, Sigstore is the only method of signing and verification of release artifacts. Releases of Python older than the 3.14 series also include legacy OpenPGP signatu...

  • CVE Numbering Authority (CNA)

    CVE Numbering Authority (CNA) cve cna Landing page for the Python Software Foundation CVE Numbering Authority (CNA) The Python Software Foundation was authorized as a CVE Numbering Authority (CNA) in August 2023. CVE Numbering Authorities assign and manage CVE IDs and records on software vulnerabilities for projects within their scope. To learn more about the CVE program, visit the CVE website. What projects are in scope for the PSF CNA? Below is the complete list of projects under the PSF CNA s...

  • Download Python 2.4.4 Documentation

    Download Python 2.4.4 Documentation To download an archive containing all the documents for this version of Python in one of various formats, follow one of links in this table. The numbers in the table are the size of the download files in Kilobytes. Content Format ZIP BZip2 HTML 3639K 1366K PDF (US-Letter) 5314K 5242K PDF (A4) 5293K 5220K PostScript (US-Letter) 2280K 1656K PostScript (A4) 2285K 1660K GNU Info   932K LaTeX 1915K 1334K Contents These archives conta...

  • Download Python 2.5 Documentation

    Download Python 2.5 Documentation To download an archive containing all the documents for this version of Python in one of various formats, follow one of links in this table. The numbers in the table are the size of the download files in Kilobytes. Content Format ZIP BZip2 HTML 4001K 1526K PDF (US-Letter) 5495K 5417K PDF (A4) 5465K 5491K PostScript (US-Letter) 2427K 1771K PostScript (A4) 2433K 1774K LaTeX 1910K 1333K Contents These archives contain the following documen...

  • Download Python 2.5.2 Documentation

    Download Python 2.5.2 Documentation To download an archive containing all the documents for this version of Python in one of various formats, follow one of links in this table. The numbers in the table are the size of the download files in Kilobytes. Content Format ZIP BZip2 HTML 4.0M 1.6M PDF (US-Letter) 5.3M 5.3M PDF (A4) 5.3M 5.3M PostScript (US-Letter) 2.5M 1.8M PostScript (A4) 2.5M 1.8M LaTeX 1.9M 1.3M Contents These archives contain the following documents: What'...

  • Download Python 2.5.3 Documentation

    Download Python 2.5.3 Documentation To download an archive containing all the documents for this version of Python in one of various formats, follow one of links in this table. The numbers in the table are the size of the download files in Kilobytes. Content Format ZIP BZip2 HTML 4.0M 1.6M PDF (US-Letter) 5.3M 5.3M PDF (A4) 5.3M 5.3M PostScript (US-Letter) 2.5M 1.8M PostScript (A4) 2.5M 1.8M Contents These archives contain the following documents: What's New in Python 2...

  • Download Python 2.5.4 Documentation

    Download Python 2.5.4 Documentation To download an archive containing all the documents for this version of Python in one of various formats, follow one of links in this table. The numbers in the table are the size of the download files in Kilobytes. Content Format ZIP BZip2 HTML 4.0M 1.6M PDF (US-Letter) 5.3M 5.3M PDF (A4) 5.3M 5.3M PostScript (US-Letter) 2.5M 1.8M PostScript (A4) 2.5M 1.8M Contents These archives contain the following documents: What's New in Python 2...

  • Help

    Help New to programming and to Python? Check out the Beginner's Guide. New to Python? Read the standard tutorial. Look for a suitable book from a growing list of titles. Looking for code? See the download page for links to the Python interpreter. Explore the development repository. Got a Python problem or question? First check the Python FAQs, with answers to many common, general Python questions. The Python Help category of the discuss.python.org website hosts usage questions an...

  • Software Bill-of-Materials Information

    Software Bill-of-Materials Information Information on CPython release artifacts Software Bills-of-Material (SBOMs) Background Starting with the Python 3.12.2 release, CPython release artifacts include Software Bill-of-Materials (SBOM) documents. This page provides guidance on downloading and using Software Bill-of-Materials documents describing CPython release artifacts. Currently SBOM documents are only available for source code releases. What is a Software Bill-of-Materials (SBOM)? Software B...

  • Software Bill-of-Materials Information

    Software Bill-of-Materials Information Information on CPython release artifacts Software Bills-of-Material (SBOMs) Background Starting with the Python 3.12.2 release, CPython release artifacts include Software Bill-of-Materials (SBOM) documents. This page provides guidance on downloading and using Software Bill-of-Materials documents describing CPython release artifacts. Currently SBOM documents are only available for source code releases. What is a Software Bill-of-Materials (SBOM)? Software B...

  • Unpacking Archives

    Unpacking Archives Downloads available from python.org may be of many different types. The following provides a bit of information about them, and what applications can be used to unpack them. .tar.bz2 These files are TAR archives that have been compressed using the bzip2 application. Most Unix users will want to use these, as they offer the best compression and the tools to work with them are likely already installed. Windows users may want to install the bzip2 tools on their systems as wel...

  • Python 2.4.4 Documentation

    Python 2.4.4 Documentation Download all these documents (Many formats are available, including typeset versions for printing.) Locate previous versions What's New in Python 2.4 (changes since previous major release) Tutorial (start here) Global Module Index (for quick access to all modules) Library Reference (keep this under your pillow) Macintosh Library Modules (this too, if you use a Macintosh) Language Reference (for language lawyers) Extending and Embedding (tutori...

  • Python 2.5 Documentation

    Python 2.5 Documentation Download all these documents (Many formats are available, including typeset versions for printing.) Locate previous versions What's New in Python 2.5 (changes since previous major release) Tutorial (start here) Global Module Index (for quick access to all modules) Library Reference (keep this under your pillow) Macintosh Library Modules (this too, if you use a Macintosh) Language Reference (for language lawyers) Extending and Embedding (tutorial...

  • Python 2.5.2 Documentation

    Python 2.5.2 Documentation Download all these documents (Many formats are available, including typeset versions for printing.) Locate previous versions What's New in Python 2.5 (changes since previous major release) Tutorial (start here) Global Module Index (for quick access to all modules) Library Reference (keep this under your pillow) Macintosh Library Modules (this too, if you use a Macintosh) Language Reference (for language lawyers) Extending and Embedding (tutori...

  • Python 2.5.3 Documentation

    Python 2.5.3 Documentation Download all these documents (Many formats are available, including typeset versions for printing.) Locate previous versions What's New in Python 2.5 (changes since previous major release) Tutorial (start here) Global Module Index (for quick access to all modules) Library Reference (keep this under your pillow) Macintosh Library Modules (this too, if you use a Macintosh) Language Reference (for language lawyers) Extending and Embedding (tutori...

  • Python 2.5.4 Documentation

    Python 2.5.4 Documentation Download all these documents (Many formats are available, including typeset versions for printing.) Locate previous versions What's New in Python 2.5 (changes since previous major release) Tutorial (start here) Global Module Index (for quick access to all modules) Library Reference (keep this under your pillow) Macintosh Library Modules (this too, if you use a Macintosh) Language Reference (for language lawyers) Extending and Embedding (tutori...

  • Python Security

    Python Security Reporting security issues with PyPI or a project hosted on PyPI See the security issue information for pypi.org here. Reporting security issues The Python Software Foundation and the Python developer community take security vulnerabilities very seriously. A Python Security Response Team (PSRT) has been formed that does triage on all reported vulnerabilities and works to resolve them. To reach the response team, send email to security at python dot org. Only the response te...

  • 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...

  • About the Python Software Foundation

    About the Python Software Foundation The Python Software Foundation is the organization behind the open source Python programming language. We are devoted to creating the conditions for Python and the Python community to grow and thrive. We fulfill our mission through these core activities: Infrastructure STRUCTURE AND STABILITY SO THE PYTHON LANGUAGE, ITS CONTRIBUTORS, AND USERS CAN THRIVE. We distribute Python, free of charge and available to all, for ever. We are the stewards of Python int...

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