DavidTWynn / basic_sqlite3_test

Working on learning SQLite3

Just a place for some basic examples

Basics:

1. Create connection
2. Setup a cursor on connection
3. Execute a command on cursor
4. Commit the command statements on connection
5. Close the connection

Example usage of DbTests:

    # Handle connections to the database and save devices
    with DbTests() as database:
        # Store device info in the database
        database.add_new_device("asdf-rtr01", "Cisco", "2921")
        database.add_new_device("asdf-rtr02", "Cisco", "2921")
        database.add_new_device("asdf-dsw01", "Cisco", "3560")
        database.add_new_device("asdf-dsw02", "Cisco", "3560")

        # Get info on all devices and print
        all_devices = database.get_all_devices()
        print(all_devices)
        # Output:
        # [('asdf-rtr01', 'Cisco', '2921'), ('asdf-rtr02', 'Cisco', '2921'),
        # ('asdf-dsw01', 'Cisco', '3560'), ('asdf-dsw02', 'Cisco', '3560')]

        # Commit database changes
        print("Committing database changes...")
        database.commit()

        # Delete everything in the database
        print("Clearing devices...")
        database.clear_devices()

        # Show that nothing is in the database
        all_devices = database.get_all_devices()
        print(all_devices)
        # Output:
        # []

        # Commit changes
        print("Committing database changes...")
        database.commit()

Run:

> python .\basic_sqlite3_test.py

Output:

[('asdf-rtr01', 'Cisco', '2921'), ('asdf-rtr02', 'Cisco', '2921'), ('asdf-dsw01', 'Cisco', '3560'), ('asdf-dsw02', 'Cisco', '3560')]
Committing database changes...
Clearing devices...
[]
Committing database changes...

Resources:

Corey Schafer - https://www.youtube.com/watch?v=pd-0G0MigUA

SQLite docs - https://www.sqlite.org/docs.html

DigitalOcean - https://www.digitalocean.com/community/tutorials/how-to-use-the-sqlite3-module-in-python-3

Giraffe Academy - https://www.youtube.com/watch?v=HXV3zeQKqGY