db_upgrade.py

#!flask/bin/python
from migrate.versioning import api
from app import app

SQLALCHEMY_DATABASE_URI=app.config['SQLALCHEMY_DATABASE_URI']
SQLALCHEMY_MIGRATE_REPO=app.config['SQLALCHEMY_MIGRATE_REPO']

api.upgrade(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)
v = api.db_version(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)
print('Current database version: ' + str(v))