Below are the basic steps for building out a basic Flask API app.
It makes the assumption that you have Pipenv installed on your system for managing dependencies. (Pipenv tutorial)
Step 1 - Setup the Python Project with Pipenv
pipenv --three
Step 2 - Import Flask as a Dependency
pipenv install flask
Step 3 - Create app.py file
touch app.py
Step 4 - Add Basic Code to Test Setup
Step 5 - Start Pipenv Shell
pipenv shell
Step 6 - Run Flask Server
python app.py
Step 7 - Test in Browser
Go to localhost:5000 and you should see a screen like this (I have it zoomed in to make it easier to read):
Step 8 - Install Database and API Libraries
(Note the change in the name for Flask-SQLAlchemy)
pipenv install Flask-SQLAlchemy
pipenv install flask-marshmallow
pipenv install marshmallow-sqlalchemy
Step 9 - Build Out CRUD API Actions
Step 10 - Setup SQLite Database and Tables
Enter Python shell:
python
>>> from crud import db
>>> db.create_all()
Step 11 - Start Server and Test API
Using a tool like Postman, you can: create, read, update, and delete users. One example is below:
