django - Equivalent replacement for ListProperty(db.Key) in djangoappengine -

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I'm trying to use more, but I am unsure how I can write models to include the standard I know that djangotoolbox provides this field type but I am unable to detect exact syntax. 

 
 code> class profiles (db.model): data_list = db Listproperty (DBK) class data (db.model): name = db StringProperty ()

View: 

  prof = profile () data = data. For all data (data): prof.data_list.append ( Data) /// Here data_list data unit Data.get (prof.Data_list) will be able to obtain all data entities whose keys are in the data_list attribute

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