human
Complete the below
def deprecated_attribute(name, since, message=None, alternative=None, pending=False):

    ''''Used to mark a public attribute as deprecated.  This creates a
    property that will warn when the given attribute name is accessed.
    To prevent the warning (i.e. for internal code), use the private
    name for the attribute by prepending an underscore
    (i.e. ``self._name``).
    Parameters
    name : str
    The name of the deprecated attribute.
    since : str
    The release at which this API became deprecated.  This is
    required.
    message : str, optional
    Override the default deprecation message.  The format
    specifier ``name`` may be used for the name of the attribute,
    and ``alternative`` may be used in the deprecation message
    to insert the name of an alternative to the deprecated
    function.
    alternative : str, optional
    An alternative attribute that the user may use in place of the
    deprecated attribute.  The deprecation warning will tell the
    user about this alternative if provided.
    pending : bool, optional
    If True, uses a AstropyPendingDeprecationWarning instead of a
    AstropyDeprecationWarning.
    Examples
    class MyClass:
    # Mark the old_name as deprecated
    old_name = misc.deprecated_attribute(\'old_name\', \'0.1\')
    def method(self):
    self._old_name = 42'
    '''
assistant
#Here is the Python program you requested.
    private_name = ('_' + name)
    @deprecated(since, name=name, obj_type='attribute')
    def get(self):
        return getattr(self, private_name)
    @deprecated(since, name=name, obj_type='attribute')
    def set(self, val):
        setattr(self, private_name, val)
    @deprecated(since, name=name, obj_type='attribute')
    def delete(self):
        delattr(self, private_name)
    return property(get, set, delete)