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Python SQLAlchemy Basics Introduction to SQLAlchemy Querying the Movie Database

Posted by Jayme Garces
Jayme Garces
5,623 Points

I'm not sure why I am getting an error with this method?

I have tried doing this with 3 different methods and they all give me the same error. From what I saw in the video, this is how it was done when you were filtering by users with the same name. Is the issue due to not printing out just the movie name?

models.py 
from sqlalchemy import create_engine, Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker


engine = create_engine(‘sqlite:///movies.db’, echo=False)
Session = sessionmaker(bind=engine)
session = Session()
Base = declarative_base()


class Movie(Base):
    __tablename__ = ‘movies’

    id = Column(Integer, primary_key=True)
    movie_title = Column(String)
    genre = Column(String)

# Write your code below
for romance_movies in models.session.query(models.Movie).filter(models.Movie.genre='Romance'):
    print(romance_movies.name)

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

Hey Jayme Garces, you are very close. You are providing too much object path information. Since you are already in the models module:

  • use session instead of models.session
  • use Model instead of models.Model
  • use genre instead of models.Model.genre
  • assign to variable romance_movies = ...

Post back if you need more help. Good luck!!!

Jayme Garces
Jayme Garces
5,623 Points

Aaaah ok that makes a lot of sense. I didn't make that connection, since in the videos we mostly queried within the Python shell so I just assumed we had to use models.___. Thanks for clearing that up!