The following code should work (from https://stackoverflow.com/a/46780742/208880):


    class BaudRate(Enum):

        cls = vars()
        regexp = r"(?:^|,)B(?P<rate>\d+)"
        rates = sorted(map(int, re.findall(regexp, ",".join(dir(termios)))))
        for value in rates:
            cls['B%d' % value] = value

        @classmethod
        def valid_rate(cls, value):
            return (any(value == item.value for item in cls))


This doesn't work because EnumMeta does not allow names to be reassigned nor deleted.  aenum gets around this by allowing an _ignore_ attribute which contains the names that should not be tracked (and, in fact, those names are removed from the final class).

Unless a better idea is put forward, I will add _ignore_ support to Enum.