Sqlite3 Tutorial Query Python Fixed Jun 2026

DB_NAME = "tasks.db"

cursor.executemany('INSERT INTO books (title, author, year, rating) VALUES (?, ?, ?, ?)', sample_books) connection.commit() # Don't forget this – a common "fix" we'll discuss later sqlite3 tutorial query python fixed

import sqlite3 conn = sqlite3.connect("mydb.sqlite", isolation_level=None) # autocommit off if None? see below cur = conn.cursor() DB_NAME = "tasks

cursor.execute("SELECT department, AVG(salary) as avg_salary FROM employees GROUP BY department") for dept, avg in cursor: print(f"dept: avg:.2f") Close connection if conn: conn

# --- THE FIX FOR PROPER TEXT --- # This ensures that text fields are returned as Python strings (str), # not as bytes objects (b'text'). conn.text_factory = str

finally: # 7. Close connection if conn: conn.close() print("\nDatabase connection closed.")

data = [(f"User_i", "Test", i*1000) for i in range(10000)] cursor.executemany("INSERT INTO employees (name, department, salary) VALUES (?, ?, ?)", data) conn.commit()