The ':=' operator is officially known as the assignment operator.
It was dubbed the walrus operator because the ':=' syntax resembles the eyes and tusks of a sideways walrus.
Walrus appeared in Python 3.8
Code:
>>> walrus = False
>>> walrus
False
>>> (walrus := True)
True
>>> walrus
True
I loved the early days of Object Pascal, Win32, and Delphi 1 and 2.
Everything started to fall apart to Borland when Anders Hejlsberg went to Microsoft.
BTW I still use Delphi and earn money from it, even after almost 30 years.
R.I.P Niklaus!