class Cmd:
PROMPT = '> '

@property
def prompt(self) -> str:
return self.PROMPT

This makes .prompt a read-only instance attribute. So you then wouldn’t be able to change it for a given instance.

Why make it an instance attribute if all instances will have the same one? Unless you want to disallow overriding it in an instance.

If the reason is to make MyPy happy, then either there’s a big in your code, or MyPy is being overly pedantic.

NOTE: accessing class attributes via self is standard practice — after all methods are simply callable class attributes :-)

-CHB

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