When you create a Track object and don't assign the primary key attributes
directly, the instance key of the object is all nulls:
Track.__mapper__.identity_key_from_instance(track1)
(, (1, None, None, None), None)
Track.__mapper__.identity_key_from_instance(track2)
(, (1, None, None, None),
Hello! I am new to sqlalchemy and was hoping to get some insight on the
following issue:
import sqlalchemyfrom sqlalchemy import Column, Integer, Stringfrom
sqlalchemy.ext.declarative import declarative_basefrom sqlalchemy.ext.hybrid
import hybrid_propertyfrom sqlalchemy.orm import
