Re:What’s New in Python 3.7
by nerdponx on Sunday September 17, 2017 @11:59AM
(#15270202)
On python-dev a few month ago, Guido agreed with you that this is an arbitrary limitation that should be removed at some point. In particular, he worried that programmatically generated code would tend to run into this limitation.[0]
[0]: https://bugs.python.org/msg142998