How can I initialize the database automatically with SQLalchemy and Alembic?

Question

Currently, I run

$ flask db init
$ flask db migrate -m "initialization"
$ flask db upgrade

if the database does not exist. I would like to run this within Python, e.g. something like

app.create_db()

so that I don't have to care about setting the database up. Is that possible?

I use the flask-sqlalchemy and flask-migrations plugins

Answer 1

Obviously, you have installed flask-migrate, flask-sqlalchemy.

So, you can do like this:

from flask_sqlalchemy import SQLAlchemy
from flask import Flask

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:////tmp/test.db'
db = SQLAlchemy(app)
db.create_all()

API DOC: flask.ext.sqlalchemy.SQLAlchemy.create_all

but your Question has confused me. why restricted by SQLAlchemy and Alembic?