Inheriting from Protocols in Python

Question

Are there any benefits in inheriting from Protocols in Python?

eg.

class SampleProtocol(Protocol):
    def do_something(self) -> int:
      ...
    
class Sample(SampleProtocol):
    def do_something(self) -> int:
        return 10

or should Sample just be a class that implements the Protocol without explicitly inheriting from it?

Answer 1

Another advantage, according to the PEP, is

type checkers can statically verify that the class actually implements the protocol correctly.

That is, it can warn you if Sample doesn't have a conforming do_something method.