<Schema: ['content']> is not a Schema

[liyanfu520]

创建索引时报错<Schema: ['content']> is not a Schema，什么原因呢？

schema = fields.Schema(content=fields.TEXT)

storage = FileStorage(standard_table_index1)
if not os.path.exists(standard_table_index1):
os.mkdir(standard_table_index1)
ix = storage.create_index(schema)
else:
ix = storage.open_index()
print("新增索引")