Engines and connection strings
Alright, it's time to create your first engine! An engine is just a common interface to a database, and the information it requires to connect to one is contained in a connection string, for example sqlite:///example.sqlite
. Here, sqlite
in sqlite:///
is the database driver, while example.sqlite
is a SQLite file contained in the local directory.
You can learn a lot more about connection strings in the SQLAlchemy documentation.
Your job in this exercise is to create an engine that connects to a local SQLite file named census.sqlite
. Then, print the names of the tables the engine contains using the .table_names()
method. Note that when you just want to print the table names, you do not need to use engine.connect()
after creating the engine.
This exercise is part of the course
Introduction to Databases in Python
Exercise instructions
- Import
create_engine
from thesqlalchemy
module. - Using the
create_engine()
function, create an engine for a local file namedcensus.sqlite
withsqlite
as the driver. Be sure to enclose the connection string within quotation marks. - Print the output from the
.table_names()
method on theengine
.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Import create_engine
# Create an engine that connects to the census.sqlite file: engine
engine = ____
# Print table names
print(____)