manage.py

from flask_migrate import Migrate, MigrateCommand
from flask_script import Manager, Server

from cal import app
from models import db

manager = Manager(app)

migrate = Migrate(app, db)
manager.add_command('db', MigrateCommand)

server_command = Server(host='0.0.0.0', port=5000, use_debugger=True, use_reloader=True)
manager.add_command('runserver', server_command)

if __name__ == '__main__':
    manager.run()