![]() The following program creates an SQLite database in the memory. If you pass the file name as :memory: to the connect() function of the sqlite3 module, it will create a new database that resides in the memory (RAM) instead of a database file on disk. If you skip the folder path c:\sqlite\db, the program will create the database file in the current working directory (CWD). Let’s run the program and check the c:\sqlite\db folder. Note that the prefix r in the r"C:\sqlite\db\pythonsqlite.db" instructs Python that we are passing a raw string. Second, we pass the path of the database file to the create_connection() function to create the database. cursor connect.cursor () Let’s define a SQL command that our cursor can execute. ![]() It is a good programming practice that you should always close the database connection when you complete with it. The database should be created Figure 1: Created database Executing commands We also need to create a cursor, which lets you interact and modify the database. ![]() If everything is fine, we display the SQLite database version. Python, SQLite, and SQLAlchemy give your programs database functionality, allowing you to store data in a single file without the need for a database server. Using the classes and methods defined in the sqlite3 module we can communicate with the SQLite database. In this guide, you’ll see a complete example with the steps to create a database in Python using sqlite3. In case an error occurs, we catch it within the try except block and display the error message. 1.import sqlite3 statement imports the sqlite3 module in the program. By using the Connection object, you can perform various database operations. It returns a Connection object that represents the database. The connect() function opens a connection to an SQLite database. Inside the function, we call the connect() function of the sqlite3 module. We’ll also briefly cover the creation of the sqlite database table using Python. In this article we’ll demonstrate loading data from an SQLite database table into a Python Pandas Data Frame. """ create a database connection to a SQLite database """Ĭreate_connection( r"C:\sqlite\db\pythonsqlite.db")įirst, we define a function called create_connection() that connects to an SQLite database specified by the database file db_file. To interact with an SQLite database in Python you have to connect to the database, create a cursor and use the execute () function on the cursor. An SQLite database can be read directly into Python Pandas (a data analysis library).
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