SQLalchemy not find table for creating foreign key

Question

I have a problem with SQL Alchemy, while trying to create a database, i get:

\"sqlalchemy.exc.NoReferencedTableError: Foreign key associated with column \'estate         


        

Answer 1

In case of Declarative, I solved this problem by simply importing the class that was 'could not be found'.

Answer 2

By adding the following line to my parent table solved my problem. In case of Declarative:

children = relationship("Child")

Otherwise: SQLAlchemy - Classic Mapper

Also try to have a look in here (SO) too, might help.

Answer 3

The solution is to replace the strings with actual columns:

Column('person_id', Integer, ForeignKey(tbl_person.c.id), primary_key=True)