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Python 3.7.0

Release Date: 2018-06-27

Python 3.7.0 is the newest major release of the Python language, and it contains many new features and optimizations.

Among the major new features in Python 3.7 are:

  • PEP 539, new C API for thread-local storage
  • PEP 545, Python documentation translations
  • New documentation translations: Japanese, French, and Korean.
  • PEP 552, Deterministic pyc files
  • PEP 553, Built-in breakpoint()
  • PEP 557, Data Classes
  • PEP 560, Core support for typing module and generic types
  • PEP 562, Customization of access to module attributes
  • PEP 563, Postponed evaluation of annotations
  • PEP 564, Time functions with nanosecond resolution
  • PEP 565, Improved DeprecationWarning handling
  • PEP 567, Context Variables
  • Avoiding the use of ASCII as a default text encoding (PEP 538, legacy C locale coercion and PEP 540, forced UTF-8 runtime mode)
  • The insertion-order preservation nature of dict objects is now an official part of the Python language spec.
  • Notable performance improvements in many areas.

Please see What’s New In Python 3.7 for more information.

More resources

Windows users

  • The binaries for AMD64 will also work on processors that implement the Intel 64 architecture. (Also known as the "x64" architecture, and formerly known as both "EM64T" and "x86-64".)
  • There are now "web-based" installers for Windows platforms; the installer will download the needed software components at installation time.
  • There are redistributable zip files containing the Windows builds, making it easy to redistribute Python as part of another software package. Please see the documentation regarding Embedded Distribution for more information.

macOS users

  • For 3.7.0, we provide two binary installer options for download. The default variant is 64-bit-only and works on macOS 10.9 (Mavericks) and later systems. We also continue to provide a 64-bit/32-bit variant that works on all versions of macOS from 10.6 (Snow Leopard) on. 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. Consider using the new 10.9 64-bit-only installer variant, unless you are building Python applications that also need to work on older macOS systems.
  • Both installer variants include private copies of OpenSSL 1.1.0. Please carefully read the Important Information displayed during installation for information about SSL/TLS certificate validation and the Install Certificates.command.

Full Changelog


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 41b6595deb4147a1ed517a7d9a580271 22745726 SIG
XZ compressed source tarball Source release eb8c2a6b1447d50813c02714af4681f3 16922100 SIG
macOS 64-bit/32-bit installer Mac OS X for Mac OS X 10.6 and later ca3eb84092d0ff6d02e42f63a734338e 34274481 SIG
macOS 64-bit installer Mac OS X for OS X 10.9 and later ae0717a02efea3b0eb34aadc680dc498 27651276 SIG
Windows help file Windows 46562af86c2049dd0cc7680348180dca 8547689 SIG
Windows x86-64 embeddable zip file Windows for AMD64/EM64T/x64 cb8b4f0d979a36258f73ed541def10a5 6946082 SIG
Windows x86-64 executable installer Windows for AMD64/EM64T/x64 531c3fc821ce0a4107b6d2c6a129be3e 26262280 SIG
Windows x86-64 web-based installer Windows for AMD64/EM64T/x64 3cfdaf4c8d3b0475aaec12ba402d04d2 1327160 SIG
Windows x86 embeddable zip file Windows ed9a1c028c1e99f5323b9c20723d7d6f 6395982 SIG
Windows x86 executable installer Windows ebb6444c284c1447e902e87381afeff0 25506832 SIG
Windows x86 web-based installer Windows 779c4085464eb3ee5b1a4fffd0eabca4 1298280 SIG