SQL and Python Together

Python makes working with databases easy. The built-in sqlite3 module connects to SQLite databases without any installation.

import sqlite3

conn = sqlite3.connect("mydata.db")
cursor = conn.cursor()

The connection opens (or creates) the database file. The cursor executes queries.

You can also connect to PostgreSQL, MySQL, and other databases using libraries like psycopg2 or pymysql. The patterns are similar - connect, create cursor, execute queries.

Why use SQL from Python?

• Store data permanently (not just in memory)
• Handle more data than fits in memory
• Share data between applications
• Use powerful query capabilities

Most Python applications that handle data eventually need a database.

I cover SQL fundamentals with Python in my SQL with Python course.