Pythonist do call the double underscores "Dunder". For example
__baz__ = "hello"
You can call this "dunder baz" instead of " double underscore baz".
Also, methods with dunder in python are reffered to as the magic method, (i don't really know why) cos there's nothing magical in what they do
If i should add this.
They are called magic methods because they mostly used for operator overloading without explicit conversion.
P.S: probably nothing magical true or perhaps coz they can be confusing
imagine you had a class rectangle with an appropriate constructor...so
rect1 = rectangle(10, 20)
rect2 = rectangle(30, 40).
You could define a dunder to do:-
rect3 = rect1 + rect2.
(it is explained in the python tutorial)