[sqlalchemy] how to use object_session properly

hello all I want to know how to create Session with object_session which can be used to add data to the database i.e using Session.add_all().So i can pass a list as parameter to add_all as my length of list is of variable length. When i am trying to do that i was not able to associate instance

[sqlalchemy] how to use object_session properly

hello all I want to know how to create Session with object_session which can be used to add data to the database i.e using Session.add_all().So i can pass a list as parameter to add_all as my length of list is of variable length. When i am trying to do that i was not able to associate instance