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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def default(cls, package):
 """ Return a new |CorePropertiesPart| object initialized with default values for its base properties. """

        core_properties_part = cls._new(package)
        core_properties = core_properties_part.core_properties
        core_properties.title = 'Word Document'
        core_properties.last_modified_by = 'python-docx'
        core_properties.revision = 1
        core_properties.modified = datetime.utcnow()
        return core_properties_part