Erroor:There should be a variable called engine set to create_engine(). Make sure you have 3 ///, the database named mov

# First, import create_engine and declarative_base correctly from SQLAlchemy
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base

#Create a variable called engine and set it equal to create_engine. 
#Use create_engine to create a SQLite database called movies.db and set echo to False. 
#Next, create a variable named Base and set it equal to declarative_base. Then create the model class. 
#It should be called Movie, and it takes Base as an argument (it inherits from Base). 
#Inside of the class, set the __tablename__ to ’movies’.
engine = create_engie('sqlite:///movies.db', echo = False) 
Base = declarative_base()

class Movie(Base):
    __tablename__ = ’movies’