Python 3.7.0 and 3.6.6
Python 3.7.0 and 3.6.6
The latest feature release of Python, 3.7.0, has been announced, along with the latest maintenance release for Python 3.6, 3.6.6. As noted on the "What's New In Python 3.7" page, there are many significant changes in the release. These include postponed evaluation of type annotations (for performance and simpler forward references to types), insertion-order preservation for dict objects is now part of the language, data classes have been added, async and await are now keywords, there are usability and performance improvements for asyncio, a new C API for thread-local storage has been added, and more. 3.7 will get bug fix updates until shortly after 3.8 is released (in roughly 18 months) and then will get security updates until mid-2023. 3.6 will continue to get bug fixes through the end of 2018 and security fixes into 2021.