def get_new_attributes(existing_attributes, changed_attributes):
    """
    >>> existing_attributes = {'a': 1, 'b': 2, 'c': 3}
    >>> changed_attributes = {'a': 6, 'c': 'x,y'}
    >>> get_new_attributes(existing_attributes,changed_attributes) \
        == {'b': 2, 'c': 'x,y', 'a': 6}
    True
    """
    new_attributes = existing_attributes.copy()
    new_attributes.update(changed_attributes)
    return new_attributes