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Python

David Hultén
David Hultén
6,674 Points
Posted by David Hultén
David Hultén
6,674 Points

The console is saying that there is an incompatibility with SQLAlchemy2.0 and I don't how to fix it

here is my code and when i run it in the console it says that the argument declarative_base() is incompatible with SQLAlchemy2.0

# Animals
# ID | Name | Habitat

# Zookeeper Log
# ID | Animal ID (Foreign Key) | Notes
from sqlalchemy import (create_engine, Column, Integer,
                        String, ForeignKey)
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker, relationship


engine = create_engine("sqlite:///zoo.db", echo=False)
Session = sessionmaker(bind=engine)
session = Session()
Base = declarative_base()


class Animal(Base):
    __tablename__ = "animals"

    id = Column(Integer, primary_key=True)
    name = Column(String)
    habitat = Column(String)
    logs = relationship("Logbook", back_populates="animal")

    def __repr__(self):
        return f"""
    \nAnimal {self.id}\r
    Name = {self.name}\r
    Habitat = {self.habitat}
    """


class Logbook(Base):
    __tablename__ = "logbook"

    id = Column(Integer, primary_key=True)
    animal_id = Column(Integer, ForeignKey("animals.id"))
    notes = Column(String)
    animal = relationship("Animal", back_populates= "logs")

    def __repr__(self):
        return f"""
    \nLogbook {self.id}\r
    Animal ID = {self.animal_id}\r
    Notes = {self.notes}
    """


if __name__ == "__main__":
    Base.metadata.create_all(engine)