SQLite is lightweight and easy to integrate with Python.
Discover the basic principles of database programming in Python with a simple user registration app.
A connection helps you connect to an existing database or create a new one.
If there is no database at the specified path, it will create one.
You should close your database connection when you’re done interacting with the database.
A cursor helps you interact with the connected database.
You will use a cursor to execute SQL queries within your Python program.
There are three main methods you could use to execute a database transaction.
Note the?placeholders in the SQL statement.
The executemany method will replace these with the corresponding values for each object.
These steps will show you how to create a simple registration system with Python and SQLite3.
It creates four columns in the table to hold user information.
The email field is unique to prevent users from creating multiple accounts with the same email.
The call toconn.commitis important to commit the query into the database.
Without it, there will be no changes to the database.
This function collects the user’s first name, last name, email, and password.
Step 4: Check Password Correctness
Modify theregister_userfunction to ensure the user enters the same password twice.
If they don’t you should prompt them to re-enter the password.
This means the database will return an error if a user signs up with an email that already exists.
you could usean SQL queryto do so.
Finally, theconn.commitmethod commits the SQL operation to the database.
To continue practicing your low-level database skills, try implementing a login system to complement the registration program.
