Is sqlite3 built into Python?

Becky 43 Published: 08/04/2024

Is sqlite3 built into Python?

I'd be happy to respond in English for this special occasion.

SQLite is a self-contained, file-based SQL database that is commonly used for local storage and caching purposes. SQLite is not built into Python per se, but it can be easily accessed and utilized from within the Python programming language.

To use SQLite in your Python program, you would typically need to:

Install the sqlite3 module: You'll first need to install the sqlite3 module using pip (Python's package installer) by running the command pip install pysqlite3. This module provides a Python interface to the SQLite database. Import the sqlite3 module: Once installed, you can import the sqlite3 module into your Python script using the statement import sqlite3. Establish a connection to the database: To start interacting with the SQLite database, you'll need to establish a connection by creating a new SQLite connection object and specifying the database file name (or :memory: for in-memory databases). This can be done using the sqlite3.connect() method. Create tables and perform CRUD operations: Once connected, you can create tables, insert data, update records, and query the database using SQL commands.

Here's a simple example to illustrate how SQLite is used with Python:

import sqlite3
Establish connection
conn = sqlite3.connect(':memory:')  # Create an in-memory database
Create table (if it doesn't already exist)
c = conn.cursor()
c.execute('''
CREATE TABLE IF NOT EXISTS users (
id INTEGER PRIMARY KEY,
name TEXT NOT NULL,
email TEXT NOT NULL
);
''')
Insert data
user_data = [('John', '[email protected]'), ('Jane', '[email protected]')]
c.executemany('INSERT INTO users VALUES (NULL, ?, ?)', user_data)
Commit changes and close the connection
conn.commit()
conn.close()

As you can see, while SQLite is not built into Python, it's easily accessible via a dedicated module that provides a comprehensive interface for database operations.

How to add sqlite3 in Python?

I'm glad you're interested in learning about SQLite and Python! To use SQLite with Python, you'll need to install the sqlite3 module, which is a built-in library in Python's standard library.

Here are the steps to add SQLite support in your Python program:

Install SQLite: First, you need to have SQLite installed on your system. If it's not already installed, you can download it from the official SQLite website: https://www.sqlite.org/download.html. Follow the installation instructions for your operating system.

Import SQLite: In your Python script, import the sqlite3 module using the following code:

   import sqlite3

Connect to Database: To start interacting with a database, you'll need to establish a connection to it. You can do this by creating a connection object and specifying the name of your database (or the path if it's not in the current directory). Here's an example:

   conn = sqlite3.connect('example.db')

Create Table: SQLite uses SQL commands to create, read, update, and delete data from the database. To create a table in your database, use the following code:

   cursor = conn.cursor()
cursor.execute('''
CREATE TABLE IF NOT EXISTS example (
id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT NOT NULL
);
''')

Insert Data: After creating the table, you can insert data into it using SQL commands or Python's SQLite module:

   cursor.execute("INSERT INTO example (name) VALUES ('John')")
conn.commit()

Retrieve Data: To retrieve data from your database, use a SELECT statement in SQL:

   cursor.execute('SELECT * FROM example')
rows = cursor.fetchall()
for row in rows:
print(row)

Close Connection: Once you're done with the database operations, be sure to close the connection to avoid potential issues:

   conn.close()

Here's a full code example that demonstrates these steps:

import sqlite3
Connect to SQLite database
conn = sqlite3.connect('example.db')
Create table if it doesn't already exist
cursor = conn.cursor()
cursor.execute('''
CREATE TABLE IF NOT EXISTS example (
id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT NOT NULL
);
''')
Insert data into the table
cursor.execute("INSERT INTO example (name) VALUES ('John')")
conn.commit()
Retrieve and display data from the table
cursor.execute('SELECT * FROM example')
rows = cursor.fetchall()
for row in rows:
print(row)
Close connection
conn.close()

By following these steps and using this code as a starting point, you'll be able to create, insert data into, and retrieve information from a SQLite database using Python.