[cranium]

The Walrus operator! Introduced in Python 3.8 according to the PEP 572.

Really nice to combine 1) checking if something exists and 2) act on it

[indymike]

You forgot to end with "goo goo g'joob" or the less correct Simon and Garfunkel version "coo coo ca choo".

[Iwan-Zotow]

And for lambdas