I really dislike the fact that case with is instance check looks like
instantiation.
case Node(children=[…])
Along with checks for int or enum cases, "is instance” and attribute checks
like the one above will be perceived as equality check.
Basically what happens is based on context the round brackets () next to the
class name mean different things, which will confuse people a lot.
If instead the curly brackets {}were used for "match checks” the code would be
more explicit about not being an equality check:
case Node{children=[…]}
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