django _meta方法

 models.Book._meta.'concrete_model':  <class 'books.models.Book'>
 models.Book._meta.'related_fkey_lookups':  []
 models.Book._meta.'get_latest_by':  None
 models.Book._meta.'verbose_name':  book
 models.Book._meta.'_forward_fields_map':  {'publisher': <django.db.models.fields.related.ForeignKey: publisher>, 'publisher_id': <django.db.models.fields.related.ForeignKey: publisher>, 'publication_date': <django.db.models.fields.DateField: publication_date>, 'id': <django.db.models.fields.AutoField: id>, 'authors': <django.db.models.fields.related.ManyToManyField: authors>, 'title': <django.db.models.fields.CharField: title>}
 models.Book._meta.'db_tablespace':
 models.Book._meta.'swappable':  None
 models.Book._meta.'local_fields':  [<django.db.models.fields.AutoField: id>, <django.db.models.fields.CharField: title>, <django.db.models.fields.related.ForeignKey: publisher>, <django.db.models.fields.DateField: publication_date>]
 models.Book._meta.'_get_fields_cache':  {(True, False, True, False, True): (<django.db.models.fields.AutoField: id>, <django.db.models.fields.CharField: title>, <django.db.models.fields.related.ForeignKey: publisher>, <django.db.models.fields.DateField: publication_date>, <django.db.models.fields.related.ManyToManyField: authors>), (True, False, False, False, True): (<django.db.models.fields.AutoField: id>, <django.db.models.fields.CharField: title>, <django.db.models.fields.related.ForeignKey: publisher>, <django.db.models.fields.DateField: publication_date>, <django.db.models.fields.related.ManyToManyField: authors>)}
 models.Book._meta.'unique_together':  []
 models.Book._meta.'apps':  <django.apps.registry.Apps object at 0x1038e1e10>
 models.Book._meta.'verbose_name_plural':  books
 models.Book._meta.'object_name':  Book
 models.Book._meta.'original_attrs':  {}
 models.Book._meta.'required_db_features':  []
 models.Book._meta.'model':  <class 'books.models.Book'>
 models.Book._meta.'proxied_children':  []
 models.Book._meta.'auto_field':  books.Book.id
 models.Book._meta.'pk':  books.Book.id
 models.Book._meta.'_ordering_clash':  False
 models.Book._meta.'managed':  True
 models.Book._meta.'permissions':  []
 models.Book._meta.'managers':  [(22, <django.db.models.manager.Manager object at 0x104f7e128>, False)]
 models.Book._meta.'required_db_vendor':  None
 models.Book._meta.'virtual_fields':  []
 models.Book._meta.'abstract':  False
 models.Book._meta.'proxy':  False
 models.Book._meta.'has_auto_field':  True
 models.Book._meta.'order_with_respect_to':  None
 models.Book._meta.'default_permissions':  ('add', 'change', 'delete')
 models.Book._meta.'fields':  (<django.db.models.fields.AutoField: id>, <django.db.models.fields.CharField: title>, <django.db.models.fields.related.ForeignKey: publisher>, <django.db.models.fields.DateField: publication_date>)
 models.Book._meta.'app_label':  books
 models.Book._meta.'auto_created':  False
 models.Book._meta.'parents':  OrderedDict()
 models.Book._meta.'ordering':  []
 models.Book._meta.'proxy_for_model':  None
 models.Book._meta.'local_many_to_many':  [<django.db.models.fields.related.ManyToManyField: authors>]
 models.Book._meta.'model_name':  book
 models.Book._meta.'index_together':  []
 models.Book._meta.'_relation_tree':  [<django.db.models.fields.related.ForeignKey: book>]
 models.Book._meta.'default_related_name':  None
 models.Book._meta.'select_on_save':  False
 models.Book._meta.'db_table':  books_book

 for method in get_model._meta.__dict__:
                 if hasattr(get_model._meta, method):
                     get_method = getattr(get_model._meta, method)
                     print("++++++++++%s._meta.%s: type: %s++++++++++" % (get_model, method, type(get_method)))
                     if type(get_method) in (list, tuple):
                         for obj in get_method:
                             print(str("-----\t").expandtabs(8), obj)
                     else:
                         if type(get_method) == dict:
                             for key, value in get_method.items():
                                 print(str("-----\t").expandtabs(8), key, value, type(value))
                         else:
                             print(str("-----\t").expandtabs(8), get_method)