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Python 3.7.6rc1

Release Date: Dec. 11, 2019


Python 3.8 is now the latest feature release series of Python 3. Get the latest release of 3.8.x here. We plan to continue to provide bugfix releases for 3.7.x until mid 2020 and security fixes until mid 2023.

Python 3.7.6rc1 is the release candidate preview of the sixth and most recent maintenance release of Python 3.7. The Python 3.7 series contains many new features and optimizations.

Note that 3.7.6rc1 is a release preview and thus its use is not recommended for production environments.

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

  • Changed in 3.7.5 3.7.x 10.9+ installer packages are now compatible with the Gatekeeper notarization requirements of macOS 10.15 Catalina.
  • 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. Changed in 3.7.4 The 64-bit/32-bit variant that also works on very old versions of macOS, from 10.6 (Snow Leopard) on, is now deprecated and will no longer be provided in future releases; see the macOS installer ReadMe file for more info. Both variants 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.
  • Both installer variants include private copies of OpenSSL. Please carefully read the Important Information displayed during installation for information about SSL/TLS certificate validation and the Install Certificates.command. Changed in 3.7.4 OpenSSL has been updated from 1.1.0 to 1.1.1.

Full Changelog


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 5ddf9d70aff27fefab7ad8de050cdebc 23148815 SIG
XZ compressed source tarball Source release 0da939e027461a72fd592ced87c96285 17255288 SIG
macOS 64-bit/32-bit installer macOS for Mac OS X 10.6 and later 7c6ed230cb05c1e3d15980d265101a6e 35054941 SIG
macOS 64-bit installer macOS for OS X 10.9 and later e6cc507b8fbb0bcecce22ca5beb9ede1 28232174 SIG
Windows help file Windows 1fc74118ba8d8061317e0884dde412a7 8152930 SIG
Windows x86-64 embeddable zip file Windows for AMD64/EM64T/x64 07085f47026b593189c4262828dd2e1e 7503671 SIG
Windows x86-64 executable installer Windows for AMD64/EM64T/x64 88866ee96a54e71a1ddb571d2b1b8a11 26799632 SIG
Windows x86-64 web-based installer Windows for AMD64/EM64T/x64 2a01742880ff0ed3f35cfa832d52fa1f 1363056 SIG
Windows x86 embeddable zip file Windows fa19731a735092b07548e271d6ffa69d 6747284 SIG
Windows x86 executable installer Windows 56a1b104b41d09c1e18bb11c37aa7f0e 25788968 SIG
Windows x86 web-based installer Windows d109c4001eeaaa35c729e43c9c879b22 1325272 SIG