[Python] What do ** (double star/asterisk) and * (star/asterisk) inside square brakets mean...

What does T, *Ts, **P mean when they are used in square brackets directly after a class or function name or with the type keyword?

class ChildClass[T, *Ts, **P]: ...

def foo[T, *Ts, **P](arg: T) -> Callable[P, tuple[T, *Ts]]:

type vat[T, *Ts, **P] = Callable[P, tuple[T, *Ts]]


See complementary questions about ** and * for function parameters and arguments:

• What do ** (double star/asterisk) and * (star/asterisk) mean in a function call?
• What does ** (double star/asterisk) and * (star/asterisk) do for parameters?

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