Person

from warnings import warn


class Person:
    """
    a person
    """
    _ssn: int
    _name: str
    _age: int

    def __init__(self, ssn: int, **kwargs) -> None:
        """
        Create an instance of Person

        :param ssn: social security number
        :type ssn: int
        :key name: person's first name, should be a str
        :key age: person's age in years, rounded down, should be an int
        :return: __init__ should return None
        :rtype: None
        """
        self._ssn = ssn
        if 'name' in kwargs:
            if type(kwargs['name']) is str:
                self._name = kwargs['name']
            else:
                raise TypeError("__init__() kwargs['name']: Got {} but expected \
                type is str".format(type(kwargs["name"]).__name__))
        else:
            warn('This person have a default name', Warning)
            self._name = 'Smith'

        if 'age' in kwargs:
            if type(kwargs['age']) is int:
                self._age = kwargs['age']
            else:
                raise TypeError("__init__() kwargs['age']: Got {} but expected \
                type is str".format(type(kwargs["age"]).__name__))
        else:
            warn('This person have a default age', Warning)
            self._age = 21

    @property
    def name(self) -> str:
        return self._name

    @name.setter
    def name(self, value: str) -> None:
        if type(value) is not str:
            raise TypeError('name.setter(): got {} but expected type is str'
                            .format(type(value).__name__))
        else:
            self._name = value

    @property
    def age(self) -> int:
        return self._age

    @age.setter
    def age(self, value) -> None:
        if type(value) is not int:
            raise TypeError('age.setter(): got {} but expected type is int'
                            .format(type(value).__name__))
        else:
            self._age = value