Consider using the newer 10.9 64-bit-only installer variant, unless you are building Python applications that also need to work on older macOS systems. Both variants now come with batteries-included versions oF Tcl/Tk 8.6 for users of IDLE and other tkinter-based GUI applications third-party and system versions of Tcl/Tk are no longer used. We also continue to provide a 64-bit/32-bit variant that works on all versions of macOS from 10.6 (Snow Leopard) on. The default variant is 64-bit-only and works on macOS 10.9 (Mavericks) and later systems. For Python 3.7 releases, we provide two binary installer options for download.Please see What’s New In Python 3.7 for more information. Notable performance improvements in many areas.The insertion-order preservation nature of dict objects is now an official part of the Python language spec.Avoiding the use of ASCII as a default text encoding ( PEP 538, legacy C locale coercion.PEP 565, Improved DeprecationWarning handling.

PEP 564, Time functions with nanosecond resolution.PEP 563, Postponed evaluation of annotations.

PEP 562, Customization of access to module attributes.

PEP 560, Core support for typing module and generic types.

New documentation translations: Japanese,.

PEP 545, Python documentation translations.

PEP 539, new C API for thread-local storage.

The final source-only security fix release for 3.7 was 3.7.17.Īmong the major new features in Python 3.7 are: See the downloads page for currently supported versions of Python. 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.

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