Python REST APIs With Flask, Connexion, and SQLAlchemy – Part 2

This repository holds the code for part two of the Real Python Python REST APIs With Flask, Connexion, and SQLAlchemy tutorial series.

Real Python Flask REST API – Part 2

You should first create a virtual environment:

$ python -m venv venv
$ source venv/bin/activate

Install the pinned dependencies from requirements.txt:

(venv) $ python -m pip install -r requirements.txt

Then, navigate into the rp_flask_api/ folder:

(venv) $ cd rp_flask_api
(venv) $ python app.py

To see your home page, visit http://127.0.0.1:8000. You can find the Swagger UI API documentation on http://127.0.0.1:8000/api/ui.

Optional: Build the Database

You can build a SQLite database with content by following the commands below.

Navigate inside the rp_flask_api/, enter the Python interactive shell and run the commands below:

>>> import sqlite3
>>> conn = sqlite3.connect("people.db")
>>> columns = [
...     "id INTEGER PRIMARY KEY",
...     "lname VARCHAR UNIQUE",
...     "fname VARCHAR",
...     "timestamp DATETIME",
... ]
>>> create_table_cmd = f"CREATE TABLE person ({','.join(columns)})"
>>> conn.execute(create_table_cmd)
>>> people = [
...     "1, 'Fairy', 'Sugar', '2022-10-08 09:15:10'",
...     "2, 'Ruprecht', 'Knecht', '2022-10-08 09:15:13'",
...     "3, 'Bunny', 'Easter', '2022-10-08 09:15:27'",
... ]
>>> for person_data in people:
...     insert_cmd = f"INSERT INTO person VALUES ({person_data})"
...     conn.execute(insert_cmd)
...
<sqlite3.Cursor object at 0x104ac4dc0>
<sqlite3.Cursor object at 0x104ac4f40>
<sqlite3.Cursor object at 0x104ac4fc0>

>>> conn.commit()

This will create a database named people.db that you can use with your project.

Author

• Philipp Acsany, E-mail: philipp@realpython.com

License

Distributed under the MIT license. See LICENSE for more information.