https://www.theregister.co.uk/2018/06/28/python_3_7_released/

Version 3.7 of anything probably doesn’t seem that notable, but stick with us here because Python 3.7, released on June 27th, 2018, is the programming language’s first big update in 18 months and adds plenty of new features.

Improving speed was one of the aims for this release and Python’s keepers proudly report that the new version that the new version offers “Notable performance improvements in many areas.”