Python program: Retrieve items with price greater than

Python SQLAlchemy: Exercise-7 with Solution

Write a Python program to retrieve items with a price greater than a certain value from the 'items' table using the SQLAlchemy model.

Sample Solution:


from sqlalchemy import create_engine, Column, Integer, Float, String
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base
# Create a SQLite database named shop.db
engine = create_engine('sqlite:///shop2.db', echo=False)
# Create a base class for declarative models
Base = declarative_base()
# Define the Item model
class Item(Base):
    __tablename__ = 'items'    
    item_id = Column(Integer, primary_key=True)
    item_name = Column(String, nullable=False)
    item_price = Column(Float, nullable=False)
    item_quantity = Column(Integer, nullable=False)
# Create a session to interact with the database
Session = sessionmaker(bind=engine)
session = Session()
def items_with_price_above(threshold_price):
    items = session.query(Item).filter(Item.item_price > threshold_price).all()
    return items
# Retrieve items with a price greater than a certain value
threshold_price = 2.0  # Replace with the desired threshold price
items_above_threshold = items_with_price_above(threshold_price)
# Print the retrieved items
print(f"Items with a price greater than {threshold_price}:")
for item in items_above_threshold:
    print(f"Item ID: {item.item_id}, Name: {item.item_name}, Price: {item.item_price}")
# Close the session


Items with a price greater than 2.0:
Item ID: 1, Name: Pizza, Price: 15.82
Item ID: 2, Name: Burger, Price: 2.82


Flowchart: Create SQLAlchemy models and tables.

Previous: Create SQLAlchemy models and populating tables.
Next: Update item quantity using SQLAlchemy.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

Follow us on Facebook and Twitter for latest update.