How to connect postgres?

[deskobar]

I have the following code that try to connect to a postgresql db, but it doesn't work. What am i doing wrong? I'm pretty sure that it's a simple question, but i tried enough 😢. Thx in advance :)

from uuid import UUID

import databases
import ormar
import sqlalchemy


DATABASE_URL = f'postgresql+psycopg2://{user}:{password}@{host}:{port}/{db_name}'
database = databases.Database(DATABASE_URL)
metadata = sqlalchemy.MetaData()


class BaseMeta(ormar.ModelMeta):
    # metadata = metadata
    database = database


class MyTable(ormar.Model):
    id: int = ormar.Integer(primary_key=True, autoincrement=True)
    my_uuid_field: UUID = ormar.UUID(nullable=False)

    class Meta(BaseMeta):
        tablename = "my_uuid_table"


engine = sqlalchemy.create_engine(DATABASE_URL)


def setup_db(drop_before_start=False):
    if drop_before_start:
        metadata.drop_all(engine)
    metadata.create_all(engine)


setup_db()