https://www.python.org/downloads/release/python-373/
See the What’s New In Python 3.7 document for more information about the many new features and optimizations included in the 3.7 series. Detailed information about the changes made in 3.7.3 can be found in its change log.
Thanks to all of the many volunteers who help make Python Development and these releases possible! Please consider supporting our efforts by volunteering yourself or through organization contributions to the Python Software Foundation.