传递本地python字典，将字符串映射到到create()。
Catalog.objects.create(name='Library of Congress', titles_to_authors={
'Using HStoreField with Django': 'CrazyPython and la communidad',
'Flabbergeists and thingamajigs': 'La Artista Fooista',
'Pro Git': 'Scott Chacon and Ben Straub',
})