Google App Engine : alternate method of get_by_id()
get_by_id() always get the object, if the passed object is a valid id of object and if the objects exists in the datastore. 
id can be got by object.key.id in the templat
else you always have the object.get(key).
By given an entity ID , I will query by models = Model.get_by_id(id). However, I find out that some time it will not return result collectly.
Is there any alternative or recommended method to query by entity ID in Google App Engine, python?